Developer Cloud & Infrastructure Directory

App Engine - 28 frontend instance hours per day, nine backend instance hours per day • Cloud Firestore - 1GB storage, 50,000 reads, 20,000 writes, 20,000 deletes per day • Compute Engine - 1 non-preemptible e2-micro, 30GB HDD, 5GB snapshot storage (restricted to certain regions), 1 GB network egress from North America to all region destinations (excluding China and Australia) per month • Cloud Storage - 5GB, 1GB network egress • Cloud Shell - Web-based Linux shell/primary IDE with 5GB of persistent storage. 60-hour limit per week • Cloud Pub/Sub - 10GB of messages per month • Cloud Functions - 2 million invocations per month (includes both background and HTTP invocations) • Cloud Run - 2 million requests per month, 360,000 GB-seconds memory, 180,000 vCPU-seconds of compute time, 1 GB network egress from North America per month • Google Kubernetes Engine - No cluster management fee for one zonal cluster. Each user node is charged at standard Compute Engine pricing • BigQuery - 1 TB of querying per month, 10 GB of storage each month • Cloud Build - 120 build-minutes per day

Free Jupyter Notebooks development environment.

Kaggle

Major

Jupyter Notebooks with 4 CPU cores and 30 GB RAM computational environment without any weekly usage limits. With Phone number verification, 1 Nvidia Tesla P100 GPU or 2x Nvidia Tesla T4 GPU can be added with a usage limit of 30 GPU hours/week for free. With Identity verification - 1 TPU v3-8 with 96 CPU cores and 330 GB RAM is available with a usage limit of 20 hours/week for free. Check [Technical Specifications](https://www.kaggle.com/docs/notebooks#technical-specifications) for more details.

ChromeRemoteDesktop

Major

Free remote desktop app with practically no limit on the number of devices, owned by Google, so needs a Google account.

Get free access to Gemini 3.5 Flash, Gemini 3 Flash and Gemma 4 models. The free tier for Flash offers 5 requests per minute, 20 requests per day, and 250k input tokens per minute. Meanwhile the free tier for Gemma 4 offers 30 requests per minute, 14.4k requests per day, but (only) 16k input tokens per minute. • Full, detailed list - https://cloud.google.com/free

Free developer tier offering zero-cost compute, APIs, or database storage.

CloudFront

Major

1TB egress/month, 10M HTTP requests, and 2M Function invocations/month

CloudWatch

Major

10 custom metrics and alarms, 1M API requests, 5GB of log data ingestion and 5GB of log data archive

CodeBuild

Major

100min of build time/month

CodeCommit

Major

5 active users, 5k repositories/account, 50GB storage/month and 10K requests/month

CodePipeline

Major

1 active pipeline/month

DynamoDB

Major

25GB NoSQL DB

Lambda

Major

1 million requests/month

SNS

Major

1 million publishes/month

SES

Major

3.000 messages/month (6mo)

SQS

Major

1 million messaging queue requests • Full, detailed list - https://aws.amazon.com/free/

Free developer tier offering zero-cost compute, APIs, or database storage.

App Service

Major

10 web, mobile, or API apps (60 CPU minutes/day)

Functions

Major

1 million requests per month

DevTest Labs

Major

Enable fast, easy, and lean dev-test environments

Active Directory

Major

500,000 objects

Active Directory B2C

Major

50,000 monthly stored users

5 active users, unlimited private Git repos

10 free parallel jobs with unlimited minutes for open source for Linux, macOS, and Windows

8,000 messages per day

Load Balancer

Major

750 hours, 15GB data processing and 5 rules (12mo)

Notification Hubs

Major

1 million push notifications

Bandwidth

Major

15GB Outbound(12mo)

Cosmos DB

Major

25GB storage and 1000 RUs of provisioned throughput

Static Web Apps

Major

Build, deploy, and host static apps and serverless functions with free SSL, Authentication/Authorization, and custom domains

Storage

Major

100GB LRS transactions (Azure Files), 5GB Blob storage, 10GB LRS Archive Storage, 2x64GB SSD (12mo)

Cognitive Services

Major

AI/ML APIs (Computer Vision, Translator, Face detection, Bots, etc) with free tier including limited transactions

Cognitive Search

Major

AI-based search and indexation service, free for 10,000 documents

Managed Kubernetes service, free cluster management

Event Grid

Major

100K ops/month

Service Bus

Major

750 hours and 13 million operations Standard tier base unit (12mo) • Full, detailed list - https://azure.microsoft.com/free/

Oracle Cloud

Major

Compute • 2 AMD-based Compute VMs with 1/8 OCPU and 1 GB memory each • 2 Arm-based Ampere A1 cores and 12 GB of memory usable as one VM or up to 2 VMs • Instances will be reclaimed when [deemed idle](https://docs.oracle.com/en-us/iaas/Content/FreeTier/freetier_topic-Always_Free_Resources.htm#compute__idleinstances) • Block Volume - 2 volumes, 200 GB total (used for compute) • Object Storage - 10 GB • Load balancer - 1 instance with 10 Mbps • Databases - 2 DBs, 20 GB each • Monitoring - 500 million ingestion data points, 1 billion retrieval datapoints • Bandwidth - 10 TB egress per month, speed limited to 50 Mbps on x64-based VM, 500 Mbps * core count on ARM-based VM • Public IP - 2 IPv4 for VMs, 1 IPv4 for load balancer • Notifications - 1 million delivery options per month, 1000 emails sent per month • Full, detailed list - https://www.oracle.com/cloud/free/

IBM Cloud

Major

Cloudant database - 1 GB of data storage • Db2 database - 100MB of data storage • API Connect - 50,000 API calls per month • Availability Monitoring - 3 million data points per month • Log Analysis - 500MB of daily log • Full, detailed list - https://www.ibm.com/cloud/free/

Free developer tier offering zero-cost compute, APIs, or database storage.

Application Services

Major

Free DNS for an unlimited number of domains, DDoS Protection, CDN along with free SSL, Firewall rules and page rules, WAF, Bot Mitigation, Free Unmetered Rate Limiting - 1 rule per domain, Analytics, Email forwarding

Zero Trust & SASE

Major

Up to 50 Users, 24 hours of activity logging, three network locations

You can expose locally running HTTP port over a tunnel to a random subdomain on trycloudflare.com use [Quick Tunnels](https://developers.cloudflare.com/cloudflare-one/connections/connect-networks/do-more-with-tunnels/trycloudflare/), No account required. More features (TCP tunnel, Load balancing, VPN) in [Zero Trust](https://www.cloudflare.com/products/zero-trust/) Free Plan.

Workers

Major

Deploy serverless code for free on Cloudflare's global network-100k daily requests.

Workers KV

Major

100k read requests per day, 1000 write requests per day, 1000 delete requests per day, 1000 list requests per day, 1 GB stored data

R2

Major

10 GB per month, 1 million Class A operations per month, 10 million Class B operations per month

D1

Major

5 million rows read per day, 100k rows written per day, 1 GB storage

Pages

Major

Develop and deploy your web apps on Cloudflare's fast, secure global network. Five hundred monthly builds, 100 custom domains, Integrated SSL, unlimited accessible seats, unlimited preview deployments, and full-stack capability via Cloudflare Workers integration.

Queues

Major

1 million operations per month

TURN

Major

1TB of free (outgoing) traffic per month.

Zoho

Major

Started as an e-mail provider but now provides a suite of services, some of which have free plans. List of services having free plans :

Catalyst by Zoho

Major

PaaS/full-stack cloud platform with a generous [free tier](https://catalyst.zoho.com/free-tier.html)

Zoho Apptics

Major

Unified and actionable product analytics to monitor performance, analyze user behavior and collect feedback for mobile, web, and desktop apps with generous Free Forever plan. • [Email](https://zoho.com/mail) Free for 5 users. 5GB/user & 25 MB attachment limit, one domain.

Zoho Assist

Major

Zoho Assist's forever free plan includes one concurrent remote support license and Access to 5 unattended computer licenses for unlimited duration available for both professional and personnel use. • [Sprints](https://zoho.com/sprints) Free for 5 users,5 Projects & 500MB storage.

Docs

Major

Free for 5 users with 1 GB upload limit & 5GB storage. Zoho Office Suite (Writer, Sheets & Show) comes bundled.

Projects

Major

Free for 3 users, 2 projects & 10 MB attachment limit. The same plan applies to [Bugtracker](https://zoho.com/bugtracker).

Connect

Major

Team Collaboration free for 25 users with three groups, three custom apps, 3 Boards, 3 Manuals, and 10 Integrations along with channels, events & forums.

Meeting

Major

Meetings with upto 3 meeting participants & 10 Webinar attendees.

Vault

Major

Password Management is accessible for Individuals.

Showtime

Major

Yet another Meeting software for training for a remote session of up to 5 attendees.

Notebook

Major

A free alternative to Evernote.

Wiki

Major

Free for three users with 50 MB storage, unlimited pages, zip backups, RSS & Atom feed, access controls & customizable CSS.

Subscriptions

Major

Recurring Billing management free for 20 customers/subscriptions & 1 user with all the payment hosting done by Zoho. The last 40 subscription metrics are stored

Checkout

Major

Product Billing management with 3 pages & up to 50 payments.

Desk

Major

Customer Support management with three agents, private knowledge base, and email tickets. Integrates with [Assist](https://zoho.com/assist) for one remote technician & 5 unattended computers.

Cliq

Major

Team chat software with 100 GB storage, unlimited users, 100 users per channel & SSO.

Campaigns

Major

Email Marketing

Forms

Major

Form Creator

Sign

Major

Paperless Signatures

Surveys

Major

Online Surveys

Bookings

Major

Appointment Scheduling • *[⬆️ Back to Top](#table-of-contents)**

Brainboard

Cloud

Collaborative solution to visually build and manage cloud infrastructures from end-to-end.

Cloud 66

Cloud

Free for personal projects (includes one deployment server, one static site), Cloud 66 gives you everything you need to build, deploy, and grow your applications on any cloud without the headache of the “server stuff.”.

Cloud Cost Analyzer

Cloud

Scan AWS and Azure for cost waste with 92 automated checks including idle NAT gateways, gp2 volumes, and over-provisioned instances. Get savings estimates in a read-only, developer-first CLI. Free tier covers up to 5,000 resources per scan on one AWS account. Paid tiers add resource IDs and exact remediation steps.

deployment.io

Cloud

Deployment.io helps developers automate deployments on AWS. On our free tier, a developer (single user) can deploy unlimited static sites, web services, and environments. We provide 10 job executions free per month with previews and auto-deploys included in the free tier.

Parsivex

Cloud

Parsivex scans your AWS account for idle EC2, unattached EBS, oversized RDS, stale snapshots, NAT gateway overuse etc. Free tier provides a monthly scan for one AWS account and returns total monthly waste plus a category breakdown. Paid plans give access to itemized findings and scheduled re-scans.

Pulumi

Cloud

Modern infrastructure as a code platform that allows you to use familiar programming languages and tools to build, deploy, and manage cloud infrastructure.

scalr.com

Cloud

Scalr is a Terraform Automation and COllaboration (TACO) product used to better collaboration and automation on infrastructure and configurations managed by Terraform. Full Terraform CLI support, OPA integration, and a hierarchical configuration model. No SSO tax. All features are included. Use up to 50 runs/month for free. • *[⬆️ Back to Top](#table-of-contents)**

Bitbucket

Source

Unlimited public and private Git repos for up to 5 users with Pipelines for CI/CD

Codeberg

Source

Unlimited public and private Git repos for free and open-source projects (with unlimited collaborators). Powered by [Forgejo](https://forgejo.org/). Static website hosting with [Codeberg Pages](https://codeberg.page/). CI/CD hosting with [Codeberg's CI](https://docs.codeberg.org/ci/). Translating hosting with [Codeberg Translate](https://translate.codeberg.org/). Includes Package and Container hosting, Project management, and Issue Tracking

framagit.org

Source

Framagit is the software forge of Framasoft based on the Gitlab software includes CI, Static Pages, Project pages and Issue tracking.

GitGud

Source

Unlimited private and public repositories. Free forever. Powered by GitLab & Sapphire. Includes CI/CD, Static Hosting, Container Registry, Project Management and Issue Tracking.

Unlimited public repositories and unlimited private repositories (with unlimited collaborators). Includes CI/CD, Development Environment, Static Hosting, Package and Container hosting, Project management and AI Copilot

gitlab.com

Source

Unlimited public and private Git repos with up to 5 collaborators. Includes CI/CD, Static Hosting, Container Registry, Project Management and Issue Tracking

heptapod.net

Source

Heptapod is a friendly fork of GitLab Community Edition providing support for Mercurial

pijul.com

Source

Unlimited free and open source distributed version control system. Its distinctive feature is based on a sound theory of patches, which makes it easy to learn, use, and distribute. Solves many problems of git/hg/svn/darcs.

projectlocker.com

Source

One free private project (Git and Subversion) with 50 MB of space

RocketGit

Source

Repository Hosting based on Git. Unlimited Public and private repositories.

savannah.gnu.org

Source

Serves as a collaborative software development management system for free Software projects (for GNU Projects)

savannah.nongnu.org

Source

Serves as a collaborative software development management system for free Software projects (for non-GNU projects) • *[⬆️ Back to Top](#table-of-contents)**

Abstract API

APIs,

API suite for various use cases, including IP geolocation, phone number validation, or email validation.

AlphaAI

APIs,

Financial news API and MCP server. Every article gets per-ticker impact analysis, a category, and a 1-10 relevance score, and SEC Form 4 insider filings are turned into scored events. The free tier includes 20 requests per minute and 100 requests per day on both REST and MCP, no card required.

AnyHook

APIs,

Inbound webhook relay: point a Stripe, GitHub or LINE bot webhook at it and it stores each event before delivering to your handler, retries automatically when your endpoint is down, and keeps a log you can replay from. Endpoints can be created from the API with no account. Free plan includes 3,000 events/month, 1 app, 3 retries and 3 days of retention, no credit card.

Apify

APIs,

Web scraping and automation platform to create an API for any website and extract data. Ready-made scrapers, integrated proxies, and custom solutions. Free plan with $5 platform credits included every month.

APITemplate.io

APIs,

Auto-generate images and PDF documents with a simple API or automation tools like Zapier & Airtable. No CSS/HTML is required. The free plan comes with 50 images/month and three templates.

APIVerve

APIs,

Get instant access to over 120+ APIs for free, built with quality, consistency, and reliability in mind. The free plan covers up to 50 API Tokens per month. (Possibly taken down, 2025-06-25)

Beeceptor

APIs,

No-code, cloud-based platform for mocking and debugging multi-protocol APIs (REST, SOAP, gRPC & GraphQL), providing instant servers with rules-based logic, CRUD & stateful mocking, proxying, and CORS management for faster integration and testing. The free plan includes 50 requests per day and provides a public dashboard/endpoint where anyone with the dashboard URL can view submitted requests and responses.

BigDataCloud

APIs,

Provides fast, accurate, and free (Unlimited or up to 10K-50K/month) APIs for modern web like IP Geolocation, Reverse Geocoding, Networking Insights, Email and Phone Validation, Client Info and more.

Brave Search API

APIs,

Independent web, news, image, video search and AI/LLM context API, suitable for RAG pipelines and AI agents. Free tier includes $5 in monthly credits (credit card required for verification).

Browse AI

APIs,

Extracting and monitoring data on the web. 1k credits per month for free, equals 1k concurrent requests.

Calendarific

APIs,

Enterprise-grade Public holiday API service for over 200 countries. The free plan includes 500 calls per month.

Canopy

APIs,

GraphQL API for Amazon.com product, search, and category data. The free plan includes 100 calls per month.

CarAPI.dev

APIs,

Comprehensive automotive data API with VIN decoding, stolen vehicle checks, vehicle valuation, inspection data, and more. Free tier includes 100 requests/month across all 9 endpoints.

CatchDoms

APIs,

Aggregator of expired and dropping domain listings from 16 marketplaces, with SEO enrichment (backlinks, Trust Flow, Wayback history) and a quality score. Free plan: 10 unlocked listings, 5 favorites, 3 saved searches. 7-day Pro trial on signup includes full REST API and MCP server access.

Cloudmersive

APIs,

Utility API platform with full access to expansive API Library including Document Conversion, Virus Scanning, and more with 600 calls/month, North America AZ only, 2.5MB maximum file size.

CometML

APIs,

The MLOps platform for experiment tracking, model production management, model registry, and complete data lineage, covering your workflow from training to production. Free for individuals and academics.

Commerce Layer

APIs,

Composable commerce API that can build, place, and manage orders from any front end. The developer plan allows 100 orders per month and up to 1,000 SKUs for free.

Composio

APIs,

Integration platform for AI Agents and LLMs. Integrate over 200+ tools across the agentic internet.

Conversion Tools

APIs,

Online File Converter for documents, images, video, audio, and eBooks. REST API is available. Libraries for Node.js, PHP, Python. Support files up to 50 GB (for paid plans). The free tier is limited by file size (20MB) and number of conversions (30/Day, 300/Month).

Country-State-City Microservice API

APIs,

API and Microservice to provides a wide range of information including countries, regions, provinces, cities, postal codes, and much more. The free tier includes up to 100 requests per day.

Coupler

APIs,

Data integration tool that syncs between apps. It can create live dashboards and reports, transform and manipulate values, and collect and back up insights. The free plan is limited to one user, data connection, data source, and data destination. Also requires manual data refresh.

CraftMyPDF

APIs,

Auto-Generate PDF documents from reusable templates with a drop-and-drop editor and a simple API. The free plan comes with 100 PDFs/month and three templates.

Cube

APIs,

Cube helps data engineers and application developers access data from modern data stores, organize it into consistent definitions, and deliver it to every application. The fastest way to use Cube is with Cube Cloud, which has a free tier limited to 1,000 queries per day.

CurlHub

APIs,

Proxy service for inspecting and debugging API calls. The free plan includes 10,000 requests per month.

CurrencyScoop

APIs,

Realtime currency data API for fintech apps. The free plan includes 5,000 calls per month.

CustomJS

APIs,

HTML to PDF or PDF to PNG/Text & PDF merging/extraction/merging APIs. Free tier has 600 calls a month.

Data Fetcher

APIs,

Connect Airtable to any application or API with no code. Postman-like interface for running API requests in Airtable. Pre-built integrations with dozens of apps. The free plan includes 100 runs per month.

Dataimporter.io

APIs,

Tool for connecting, cleaning, and importing data into Salesforce. Free Plan includes up to 20,000 records per month.

Datalore

APIs,

Python notebooks by Jetbrains. Includes 10 GB of storage and 120 hours of runtime each month.

DB Designer

APIs,

Cloud-based Database schema design and modeling tool with a free starter plan of 2 Database models and ten tables per model.

DB-IP

APIs,

Free IP geolocation API with 1k request per IP per day.lite database under the CC-BY 4.0 License is free too.

DeepAR

APIs,

Augmented reality face filters for any platform with one SDK. The free plan provides up to 10 monthly active users (MAU) and tracks up to 4 faces

Deepnote

APIs,

A new data science notebook. Jupyter is compatible with real-time collaboration and running in the cloud. The free tier includes unlimited personal projects, unlimited basic machines with 5GB RAM and 2vCPU, and teams with up to 3 editors.

Compare JSON

APIs,

An online tool for comparing differences between two JSON data structures, helping you quickly locate the differences in JSON data.

Disease.sh

APIs,

A free API providing accurate data for building the Covid-19 related useful Apps.

Doczilla

APIs,

SaaS API empowering the generation of screenshots or PDFs directly from HTML/CSS/JS code. The free plan allows 250 documents month.

Doppio

APIs,

Managed API to generate and privately store PDFs and Screenshots using top rendering technology. The free plan allows 400 PDFs and Screenshots per month.

DocPenny

APIs,

HTML to PDF document generation with templates, webhook delivery, and credit-based pricing. Free plan with 50 monthly credits, no credit card required.

Doqlo

APIs,

Bulk fill and mail merge PDF forms from CSV using the web app or Public API. The free plan includes 100 output PDFs/month.

DynamicDocs

APIs,

Generate PDF documents with JSON to PDF API based on LaTeX templates. The free plan allows 50 API calls per month and access to a library of templates.

Earnings Feed

APIs,

Real-time SEC filings, insider trades, and institutional holdings API. Free tier includes 15 requests per minute.

Estuary

APIs,

Real-time data integration platform for CDC, streaming, and batch data integration with 200+ managed connectors. Free plan includes 10 GB/month of data movement and up to 2 connector instances, with no time limit and no credit card required.

Export SDK

APIs,

PDF generator API with drag-and-drop template editor that provides an SDK and no-code integrations. The free plan has 250 monthly pages, unlimited users, and three templates.

Financial Data

APIs,

Stock market and financial data API. Free plan allows 300 requests per day.

finlight

APIs,

Real-time financial news API with entity resolution (tickers, ISIN) and sentiment tagging, available over REST, WebSocket, webhooks and an MCP server. Free tier: 5,000 requests/month on both REST and MCP, 12-hour delayed articles, no card required.

Firecrawl

APIs,

API that crawls websites and converts them into clean, LLM-ready markdown or structured data, handling JavaScript rendering, proxies, and rate limits. The free plan includes 1,000 credits per month with no credit card required.

flaky

APIs,

A mock API where you can paste your JSON and simulate API problems like delays, errors, failed requests, and malformed responses. 1,000 requests per day without a key, or 10,000 requests per day with a free key. There is no paid tier.

Formfeed

APIs,

API for PDF and image generation from JSON with a simple API or automation tools like Zapier & Make. The free plan includes 100 free PDF conversions per month.

FraudLabs Pro

APIs,

Screen an order transaction for credit card payment fraud. This REST API will detect all possible fraud traits based on the input parameters of an order. The Free Micro plan has 500 transactions per month.

FreeIPAPI

APIs,

Free, Fast and Reliable IP Geolocation API for commercial and non-commercial users available in JSON

Geolocated.io

APIs,

IP Geolocation API with multi-continent servers, offering a free plan with 2,000 requests per day.

Hex

APIs,

a collaborative data platform for notebooks, data apps, and knowledge libraries. Free community tier with up to five projects.

Hook0

APIs,

Hook0 is an open-source Webhooks-as-a-service (WaaS) that makes it easy for online products to provide webhooks. Dispatch up to 100 events/day with seven days of history retention for free.

Hoppscotch

APIs,

A free, fast, and beautiful API request builder.

HS Ping

APIs,

A multi-country HS (Harmonized System) and HTS (Harmonized Tariff System) code lookup API, with a free plan offering 100 lookups/day.

huggingface.co

APIs,

Build, train, and deploy NLP models for Pytorch, TensorFlow, and JAX. Free up to 30k input characters/mo.

Insomnia

APIs,

Open-source API client for designing and testing APIs, it supports REST and GraphQL

Inngest

APIs,

Durable execution and event-driven workflows for TypeScript, Python, and Go. Hobby plan is free with 50k executions/month, 5 concurrent steps, 500k events ingested, and no credit card required.

Invantive Cloud

APIs,

Access over 70 (cloud)platforms such as Exact Online, Twinfield, ActiveCampaign or Visma using Invantive SQL or OData4 (typically Power BI or Power Query). Includes data replication and exchange. Free plan for developers and implementation consultants. Free for specific platforms with limitations in data volumes.

IP Geolocation API by ipwho.org

APIs,

2,000 free requests per day. Fast, enterprise grade API at non-enterprise prices. Trusted by developers, corporate, government and education clients. Servers in 12+ regions.

IP Geolocation API

APIs,

IP Geolocation API from Abstract - Allows 1,000 free requests.

IP Geolocation

APIs,

IP Geolocation API - Forever free plan for developers with a 1,000 requests per day limit.

ip-api

APIs,

IP Geolocation API, Free for non-commercial use, no API key required, limited to 45 req/minute from the same IP address for the free plan.

IP.City

APIs,

100 Free IP geolocation requests per day

IP2Location.io

APIs,

Freemium, fast, and reliable IP geolocation API. Get data like city, coordinates, ISP, ASN, AS data and more. The free plan includes 50k credits per month. IP2Location.io also offers 500 free WHOIS and hosted domain lookups per month. See domain registration details and find domains hosted on a specific IP. Upgrade to a paid plan for more features.

Proxmint GeoIP

APIs,

Free IP → country/city/ASN JSON API, no key, CORS-open. MaxMind GeoLite2.

ip2geo.dev

APIs,

IP geolocation API to convert IP addresses into location data including city, country, timezone, ASN, and currency. The free plan includes 1,000 requests per month.

ipaddress.sh

APIs,

Simple service to get a public IP address in different [formats](https://about.ipaddress.sh/).

ipapi.is

APIs,

A reliable IP Address API from Developers for Developers with the best Hosting Detection capabilities that exist. The free plan offers 1000 lookups without signup.

ipapi

APIs,

IP Address Location API by Kloudend, Inc - A reliable geolocation API built on AWS, trusted by Fortune 500. The free tier offers 30k lookups/month (1k/day) without signup.

ipbase.com

APIs,

IP Geolocation API - Forever free plan that spans 150 monthly requests.

IPinfo

APIs,

Fast, accurate, and free (up to 50k/month) IP address data API. Offers APIs with details on geolocation, companies, carriers, IP ranges, domains, abuse contacts, and more. All paid APIs can be trialed for free.

IPLocate

APIs,

IP Geolocation API, free up to 1,000 requests/day. Includes proxy/VPN/hosting detection, ASN data, IP to Company, and more. IPLocate also offers free downloadable IP to Country and IP to ASN databases in CSV or GeoIP-compatible MMDB formats.

IPTrace

APIs,

An embarrassingly simple API that provides your business with reliable and helpful IP geolocation data with 50,000 free lookups per month.

JSON IP

APIs,

Returns the Public IP address of the client it is requested from. No registration is required for the free tier. Using CORS, data can be requested using client-side JS directly from the browser. Useful for services monitoring change in client and server IPs. Unlimited Requests.

JSON to Table

APIs,

Convert JSON into an interactive table for quick viewing, editing, and sharing online.

JSON2Video

APIs,

A video editing API to automate video marketing and social media videos, programmatically or with no code.

JSONing

APIs,

Create a fake REST API from a JSON object, and customize HTTP status codes, headers, and response bodies.

Labelixa

APIs,

Zebra ZPL label rendering and validation API and browser viewer. Free tier includes an anonymous rendering quota and barcode generation with no watermark, no card required.

LayerCall

APIs,

Fraud and trust scoring for an IP, email, phone, domain or device in one call, plus authorization and Web Bot Auth verification for AI agents. 1,000 lookups/month free, no card required.

LoginLlama

APIs,

A login security API to detect fraudulent and suspicious logins and notify your customers. Free for 1,000 logins per month.

Market Data API

APIs,

Provides real-time and historical financial data for stocks, options, mutual funds, and more. The Free Forever API tier allows for 100 daily API requests at no charge.

Maxim AI

APIs,

Simulate, evaluate, and observe your AI agents. Maxim is an end-to-end evaluation and observability platform, helping teams ship their AI agents reliably and >5x faster. Free forever for indie developers and small teams (3 seats).

microlink.io

APIs,

It turns any website into data such as metatags normalization, beauty link previews, scraping capabilities, or screenshots as a service. 50 requests per day, every day free.

Mintlify

APIs,

Modern standard for API documentation. Beautiful and easy-to-maintain UI components, in-app search, and interactive playground. Free for 1 editor.

MockAPI

APIs,

MockAPI is a simple tool that lets you quickly mock up APIs, generate custom data, and perform operations using a RESTful interface. MockAPI is meant to be a prototyping/testing/learning tool. One project/2 resources per project for free.

Mockerito

APIs,

Free mock REST API service providing realistic data across 9 domains (e-commerce, finance, healthcare, education, recruitment, social media, stock markets, weather, and aviation). No mandatory signup, no API keys, unlimited requests. Perfect for frontend prototyping, API testing, learning and teaching web development.

Mockfly

APIs,

Mockfly is a trusted development tool for API mocking and feature flag management. Quickly generate and control mock APIs with an intuitive interface. The free tier offers 500 requests per day.

Mocko.dev

APIs,

Proxy your API, choose which endpoints to mock in the cloud and inspect traffic, for free. Speed up your development and integration tests.

Multi-Exit IP Address Checker

APIs,

A free and simple tool to check your exit IP address across multiple nodes and understand how your IP appears to different global regions and services. Useful for testing rule-based DNS splitting tools such as Control D.

NASdisks Drive Data API

APIs,

Free, no-key, CORS-enabled API for NAS HDD/SSD specifications, per-model CMR/SMR classification, and annualized failure rates derived from Backblaze Drive Stats. Returns JSON or CSV, CC BY 4.0, no signup.

News API

APIs,

Search news on the web with code, and get JSON results. Developers get 100 queries free each day. Articles have a 24 hour delay.

OCR.Space

APIs,

An OCR API parses image and pdf files that return the text results in JSON format. 25,000 requests per month are free and a 1MB file size limit.

OpenAPI3 Designer

APIs,

Visually create Open API 3 definitions for free.

Parseur

APIs,

20 free pages/month: Extract data from PDFs, emails. AI powered. Full API access.

PDF-API.io

APIs,

PDF Automation API, visual template editor or HTML to PDF, dynamic data integration, and PDF rendering with an API. The free plan comes with one template, 100 PDFs/month.

PDFBolt

APIs,

Developer-focused PDF generation API designed with privacy in mind. It offers Stripe-inspired documentation and includes 500 free PDF conversions per month.

Pexafy

APIs,

Semantic image search API across 9 free photo sources (Unsplash, Pexels, Pixabay, Kaboompics & more), 9M+ photos under one JSON schema instead of one integration per source. Plain-language queries, reverse image search, filters on color, orientation and license. CORS is open on read endpoints, so it runs from the browser. The free plan includes 5,000 API requests/month and 1 key, no app review.

Pixela

APIs,

Free daystream database service. All operations are performed by API. Visualization with heat maps and line graphs is also possible.

Posthook

APIs,

Schedule webhooks to fire at a future time with automatic retries, delivery tracking, and failure alerting. Free plan includes 1,000 webhooks per month.

Postman

APIs,

Simplify workflows and create better APIs - faster - with Postman, a collaboration platform for API development. Use the Postman App for free forever. Postman cloud features are also free forever with certain limits.

PrefectCloud

APIs,

A complete platform for dataflow automation. Free plan includes 5 deployed workflows and 500 minutes of serverless compute credits per month.

Preset Cloud

APIs,

A hosted Apache Superset service. Forever free for teams of up to 5 users, featuring unlimited dashboards and charts, a no-code chart builder, and a collaborative SQL editor.

ProxySentry

APIs,

IP API that detects residential proxies and VPNs. ProxySentry.io offers a free tier with 10k requests per month on rapidapi.com.

Publora

APIs,

Publishing API: post or schedule to 10 social networks with one HTTPS call, or from an AI agent over MCP. Free forever: 15 posts/month, 3 connected accounts, all networks except X.

Reducto

APIs,

Turn any unstructured documents (PDF, XLSX, JPG, PPTX, etc.) into structured JSON data. Parse, extract data, and edit PDF forms. Free tier with 15k free credits and pay-as-you-go.

Rendi

APIs,

FFmpeg API - A REST API for FFmpeg, run FFmpeg online without handling the infrastructure. Free tier with monthly processing quota and 4 vCPUs available.

RequestBin.com

APIs,

Create a free endpoint to which you can send HTTP requests. Any HTTP requests sent to that endpoint will be recorded with the associated payload and headers so you can observe recommendations from webhooks and other services.

Simplescraper

APIs,

Trigger your webhook after each operation. The free plan includes 100 cloud scrape credits.

Geekflare API

APIs,

Geekflare API lets you scrape websites into Markdown, take screenshots, perform TLS scans and DNS lookups, test load times, and more. The free plan offers 500 API credits per month (e.g., 500 DNS lookups, 250 web scrapes, or 100 screenshots). See [credit mapping](https://docs.geekflare.com/api/api-credit-mapping).

SmartParse

APIs,

SmartParse is a data migration and CSV to API platform that offers time- and cost-saving developer tools. The Free tier includes 300 Processing Units per month, Browser uploads, Data quarantining, Circuit breakers, and Job Alerts.

Sofodata

APIs,

Create secure RESTful APIs from CSV files. Upload a CSV file and instantly access the data via its API allowing faster application development. The free plan includes 2 APIs and 2,500 API calls per month. You don't need a credit card.

Svix

APIs,

Webhooks as a Service. Send up to 50,000 messages/month for free.

Tavily AI

APIs,

API for online search and rapid insights and comprehensive research, with the capability of organization of research results. 1000 request/month for the Free tier with No credit card required.

TemplateFox

APIs,

PDF generation API with a visual template editor, dynamic data merging, and SDKs for 7 languages. Free plan includes 60 PDFs/month and 3 templates.

The IP API

APIs,

IP Geolocation API with 1000 free requests / day. Provides information about the location of an IP address, including country, city, region, and more.

timezone.io

APIs,

Current time, UTC offset and DST for any time zone or IP address, compatible with the shut-down WorldTimeAPI (clients only change the host). Free with no API key or sign-up, 60 requests/minute per IP, over HTTPS or plain HTTP.

TinyMCE

APIs,

rich text editing API. Core features are free for unlimited usage.

Tomorrow.io Weather API

APIs,

Offers free plan of weather API. Provides accurate and up-to-date weather forecasting with global coverage, historical data and weather monitoring solutions.

Treblle

APIs,

Treblle helps teams build, ship, and govern APIs. With advanced API log aggregation, observability, docs, and debugging. You get all features for free, but there is a limit of up to 250k requests per month on the free tier.

Trophy

APIs,

Trophy is the gamification layer for consumer apps. Use pre-built APIs and open-source UI components to ship achievements, streaks, points, leaderboards and more. Free for up to 1,000 monthly active users.

UniRateAPI

APIs,

Real-time exchange rates for 590+ currencies and crypto. Unlimited API calls on the free plan, perfect for developers and finance apps.

URLpipe

APIs,

Read any page after its JavaScript runs: Markdown, screenshots, metadata, console errors and Lighthouse audits. Free 1000 credits per month.

vatcheckapi.com

APIs,

Simple and free VAT number validation API. 150 free validations per month.

vatnode

APIs,

EU VAT number validation REST API with VIES and national tax-registry fallback, returning the official VIES consultation number for audit records. Free tier of 100 validations/month, no credit card.

WeatherXu

APIs,

Global weather data including current conditions, hourly and daily forecasts, and weather alerts via our API. Integrating AI models and ML systems to analyze and combine multiple weather models to deliver improved forecast accuracy. Free tier includes 10,000 API calls/month.

Webhooker

APIs,

Webhook gateway hosted in Germany. Signature verification, retries, dead letter queue and replay. Free plan: 10,000 events per month.

WebScraping.AI

APIs,

Simple Web Scraping API with built-in parsing, Chrome rendering, and proxies. Two thousand free API calls per month.

Weights & Biases

APIs,

The developer-first MLOps platform. Build better models faster with experiment tracking, dataset versioning, and model management. Free tier for personal projects only, with 100 GB of storage included.

What Is My IP

APIs,

A free service to check your public IPv4 and IPv6 address and related request data through an API with different output formats for automation, scripts, and network troubleshooting.

What The Diff

APIs,

AI-powered code review assistant. The free plan has a limit of 25,000 monthly tokens (~10 PRs).

XFlux

APIs,

X/Twitter read REST API (profiles, search, timelines) plus account monitors. Free tier: 1,000 API calls/month, 1 monitor, instant API key. HTTP webhooks on paid plans from $19/mo.

wolfram.com

APIs,

Built-in knowledge-based algorithms in the cloud.

wrapapi.com

APIs,

Turn any website into a parameterized API. 30k API calls per month.

Zipcodebase

APIs,

Free Zip Code API, access to Worldwide Postal Code Data. 5,000 free requests/month.

Zuplo

APIs,

Free API Management platform to design, build, and deploy APIs to the Edge. Add API Key authentication, rate limiting, developer documentation and Monetization to any API in minutes. OpenAPI-native and fully-programmable with web standard apis & Typescript. The free plan offers up to 10 projects, unlimited production edge environments, 1M monthly requests, and 10GB egress.

Metashot

APIs,

Open Graph (OG) social preview image generation API. Generate dynamic 1200×630 images for Twitter, LinkedIn and Facebook via URL params, edge-cached on Cloudflare Workers. Free tier: 1,000 renders/month. Paid plans from $12/month.

Tinyfish

APIs,

Free web search and fetch API with rate limits. • *[⬆️ Back to Top](#table-of-contents)**

Gemfury

Artifact

Private and public artifact repos for Maven, PyPi, NPM, Go Module, Nuget, APT, and RPM repositories. Free for public projects.

jitpack.io

Artifact

Maven repository for JVM and Android projects on GitHub, free for public projects.

paperspace

Artifact

Build & scale AI models, Develop, train, and deploy AI applications, free plan: public projects, 5Gb storage, basic instances.

RepoFlow

Artifact

RepoFlow Simplifies package management with support for npm, PyPI, Docker, Go, Helm, and more. Try it for free with 10GB storage, 10GB bandwidth, 100 packages, and unlimited users in the cloud, or self-hosted for personal use only.

RepoForge

Artifact

Private cloud-hosted repository for Python, Debian, NPM packages and Docker registries. Free plan for open source/public projects.

repsy.io

Artifact

1 GB Free private/public Maven Repository. • *[⬆️ Back to Top](#table-of-contents)**

3Cols

Tools

A free cloud-based code snippet manager for personal and collaborative code.

BookmarkOS.com

Tools

Free all-on-one bookmark manager, tab manager, and task manager in a customizable online desktop with folder collaboration.

Braid

Tools

Chat app designed for teams. Free for public access group, unlimited users, history, and integrations. also, it provides a self-hostable open-source version.

Calendly

Tools

Calendly is the tool for connecting and scheduling meetings. The free plan provides 1 Calendar connection per user and Unlimited sessions. Desktop and Mobile apps are also offered.

cally.com

Tools

Find the perfect time and date for a meeting. Simple to use, works great for small and large groups.

cDox

Tools

Private document editor hosted in Canada. Write, format, collaborate, and publish documents with clean public links. Data is never used for AI training. Free plan includes 50 MB storage, up to 3 public links, and export to PDF, Word, and Markdown.

Chanty.com

Tools

Chanty is another alternative to Slack. It has a free forever plan for small teams (up to 10) with unlimited public and private conversations, searchable history, unlimited 1:1 audio calls, unlimited voice messages, ten integrations, and 20 GB storage per team.

DevToolLab

Tools

Online developer tools offering free access to all basic tools, with the ability to auto save one entry per tool, standard processing speed, and community support.

Discord

Tools

Chat with public/private rooms. Markdown text, voice, video, and screen sharing capabilities. Free for unlimited users.

Dubble

Tools

Free Step-by-Step Guide creator. Take screenshots, document processes and collaborate with your team. Also supports async screen recording.

Duckly

Tools

Talk and collaborate in real time with your team. Pair programming with IDE, terminal sharing, voice, video, and screen sharing. Free for small teams.

element.io

Tools

A decentralized and open-source communication tool built on Matrix. Group chats, direct messaging, encrypted file transfers, voice and video chats, and easy integration with other services.

evernote.com

Tools

Tool for organizing information. Share your notes and work together with others

Fibery

Tools

Connected workspace platform. Free for single users, up to 2 GB disk space.

Fibo

Tools

A free online realtime scrum poker tool for agile teams that lets unlimited members estimate story points for faster planning.

Fizzy

Tools

Kanban-based platform for project management and issue tracking. Create public boards, set up webhooks, use card stamping, and track unlimited users - free for up to 1000 items.

flat.social

Tools

Interactive customizable spaces for team meetings & happy hours socials. Unlimited meetings, free up to 8 concurrent users.

flock.com

Tools

A faster way for your team to communicate. Free Unlimited Messages, Channels, Users, Apps & Integrations

GhostChat

Tools

Privacy-first live chat widget for websites (~15KB, no cookies, no tracking). Free plan includes 1 site, unlimited messages, a built-in AI chatbot (25 replies/mo), 30-day history, Gmail threading, canned responses and push notifications. No credit card required.

GitBook

Tools

Platform for capturing and documenting technical knowledge - from product docs to internal knowledge bases and APIs. Free plan for individual developers.

GitDailies

Tools

Daily reports of your team's Commit and Pull Request activity on GitHub. Includes Push visualizer, peer recognition system, and custom alert builder. The free tier has unlimited users, three repos, and 3 alert configs.

gitter.im

Tools

Chat, for GitHub. Unlimited public and private rooms, free for teams of up to 25

gokanban.io

Tools

Syntax-based, no registration Kanban Board for fast use. Free with no limitations.

Hackmd.io

Tools

Real time collaboration & writing tool for markdown format docs/files. Like Google Docs but for markdown files. Free unlimited number of "notes", but the number of collaborators (invitee) for private notes & template [will be limited](https://hackmd.io/pricing).

HeySpace

Tools

Task management tool with chat, calendar, timeline and video calls. Free for up to 5 users.

Huly

Tools

All-in-One Project Management Platform (alternative to Linear, Jira, Slack, Notion, Motion) - unlimited users, 10GB storage per workspace, 10GB video(audio) traffic.

Keybase

Tools

Keybase is a FOSS alternative to Slack; it keeps everyone's chats and files safe, from families to communities to companies.

Knocket

Tools

Free-forever contact layer for indie developers and small teams: live chat widget for websites and mobile apps (iOS/Android/Flutter/React Native via WebView), a shareable contact page (Linktree-style with socials, booking links, and blog), and a unified Telegram/email inbox. Reply from Telegram directly (no dashboard needed). Meeting scheduler, multi-language, light/dark themes. Companion open-source AI auto-reply agent. No ads, no seat limits.

Linkinize

Tools

Bookmark manager for teams with tagging, multi-workspaces, and collaboration. Free plan includes 4 workspaces and 10 team members.

Lockitbot

Tools

Reserve and lock shared resources within Slack like Rooms, Dev environments , servers etc. Free for upto 2 resources

meet.jit.si

Tools

One-click video conversations, and screen sharing, for free

Miro

Tools

Scalable, secure, cross-device, and enterprise-ready collaboration whiteboard for distributed teams. With a freemium plan.

Notion

Tools

Notion is a note-taking and collaboration application with markdown support that integrates tasks, wikis, and databases. The company describes the app as an all-in-one workspace for note-taking, project management and task management. In addition to cross-platform apps, it can be accessed via most web browsers.

Nuclino

Tools

A lightweight and collaborative wiki for all your team's knowledge, docs, and notes. Free plan with all essential features, up to 50 items, and 5GB storage.

OnlineInterview.io

Tools

Free code interview platform with embedded video chat, drawing board, and online code editor where you can compile and run your code on the browser. You can create a remote interview room with just one click.

paste.sh

Tools

This is a JavaScript and the Crypto based simple paste site.

Pastefy

Tools

Beautiful and simple Pastebin with optional Client-Encryption, Multitab-Pastes, an API, a highlighted Editor and more.

Pendulums

Tools

Pendulums is a free time tracking tool that helps you manage your time in a better manner with an easy-to-use interface and valuable statistics.

Proton Pass

Tools

Password manager with built-in email aliases, 2FA authenticator, sharing and passkeys. Available on web, browser extension, and mobile app and desktop.

Pullflow

Tools

Pullflow offers an AI-enhanced platform for code review collaboration across GitHub, Slack, and VS Code.

Pumble

Tools

Free team chat app. Unlimited users and message history, free forever.

Quidlo Timesheets

Tools

A simple timesheet and time tracking app for teams. The free plan has time tracking and generating reports features for up to 10 users.

Raindrop.io

Tools

Private and secure bookmarking app for macOS, Windows, Android, iOS, and Web. Free Unlimited Bookmarks and Collaboration.

Reezn.io

Tools

Spec-driven development workflow for teams: shifts review left so problems get caught before code is written, instead of piling up in code review. Builds a knowledge graph of your business as you go, which the AI agents use for later features. Free plan: 3 seats, 1 project, 5 features/month.

Revolt.chat

Tools

An OpenSource alternative for[Discord](https://discord.com/), that respects your privacy. It also have most proprietary features from discord for free. Revolt is a all in one application that is secure and fast, while being 100% free. every features are free. They also have (official & unofficial) plugins support unlike most main-stream chatting applications.

Rocket.Chat

Tools

Open-source communication platform with Omnichannel features, Matrix Federation, Bridge with others apps, Unlimited messaging, and Full messaging history.

ruttl.com

Tools

The best all-in-one feedback tool to collect digital feedback and review websites, PDFs, and images.

Screen Sharing via Browser

Tools

Free screen sharing tool, share your screen with collabrators right from your browser, no download or registration needed. For free.

seafile.com

Tools

Private or cloud storage, file sharing, sync, discussions. The cloud version has just 1 GB

Sharry

Tools

Screen sharing via the browser, no downloads, no installs. Useful for pair programming, presentations or remote support. Free tier: no account, 5-minute sessions, 1 viewer.

SiteDots

Tools

Share feedback for website projects directly on your website, no emulation, canvas or workarounds. Completely functional free tier.

Slab

Tools

A modern knowledge management service for teams. Free for up to 10 users.

slack.com

Tools

Free for unlimited users with some feature limitations

StatusPile

Tools

A status page of status pages. Could you track the status pages of your upstream providers?

Stickies

Tools

Visual collaboration app used for brainstorming, content curation, and notes. Free for up to 3 Walls, unlimited users, and 1 GB storage.

MeetBackdrops

Tools

Free HD virtual backgrounds for video calls on Zoom, Microsoft Teams, and Google Meet. 1,000+ studio-designed environments with no signup required.

talky.io

Tools

Free group video chat. Anonymous. Peer‑to‑peer. No plugins, signup, or payment required

Teamcamp

Tools

All-in-one project management application for software development companies.

Teamhood

Tools

Free Project, Task, and Issue-tracking software. Supports Kanban with Swimlanes and full Scrum implementation. Has integrated time tracking. Free for five users and three project portfolios.

Teamplify

Tools

improve team development processes with Team Analytics and Smart Daily Standup. Includes full-featured Time Off management for remote-first teams. Free for small groups of up to 5 users.

TeamSort

Tools

Free tool to vote on a shared list and rank items together. Create a ranked-choice poll in seconds - no signup.

Telegram

Tools

Telegram is for everyone who wants fast, reliable messaging and calls. Business users and small teams may like the large groups, usernames, desktop apps, and powerful file-sharing options.

Tencent RTC

Tools

Tencent Real-Time Communication (TRTC) offers solutions for group audio/video calls.10,000 free minutes/month for the first year.

TimeCamp

Tools

Free time tracking software for unlimited users. Easily integrates with PM tools like Jira, Trello, Asana, etc.

tldraw.com

Tools

Free open-source white-boarding and diagramming tool with intelligent arrows, snapping, sticky notes, and SVG export features. Multiplayer mode for collaborative editing. Free official VS Code extension available as well.

transfernow

Tools

simplest, fastest and safest interface to transfer and share files. Send photos, videos and other large files without a mandatory subscription.

Tugboat

Tools

Preview every pull request, automated and on-demand. Free for all, complimentary Nano tier for non-profits.

twist.com

Tools

An asynchronous-friendly team communication app where conversations stay organized and on-topic. Free and Unlimited plans are available. Discounts are provided for eligible teams.

userforge.com

Tools

Interconnected online personas, user stories and context mapping. Helps keep design and dev in sync free for up to 3 personas and two collaborators.

Visual Debug

Tools

A Visual feedback tool for better client-dev communication

Webex

Tools

Video meetings with a free plan offering 40 minutes per meeting with 100 attendees.

Webvizio

Tools

Website feedback tool, website review software, and bug reporting tool for streamlining web development collaboration on tasks directly on live websites and web apps, images, PDFs, and design files.

whereby.com

Tools

One-click video conversations, for free (formerly known as appear.in)

windmill.dev

Tools

Windmill is an open-source developer platform to quickly build production-grade multi-step automation and internal apps from minimal Python and Typescript scripts. As a free user, you can create and be a member of at most three non-premium workspaces.

wistia.com

Tools

Video hosting with viewer analytics, HD video delivery, and marketing tools to help understand your visitors, 25 videos, and Wistia branded player

wormhol.org

Tools

Straightforward file sharing service. Share unlimited files up to 5GB with as many peers as you want.

Wormhole

Tools

Share files up to 5GB with end-to-end encryption for up to 24hours. For files larger than 5 GB, it uses peer-to-peer transfer to send your files directly.

zoom.us

Tools

Secure Video and Web conferencing add-ons available. The free plan is limited to 40 minutes.

Zulip

Tools

Real-time chat with a unique email-like threading model. The free plan includes 10,000 messages of search history and File storage up to 5 GB. also, it provides a self-hostable open-source version.

RightFeature

Tools

Easily collect feedback from your customers, turn customer feedback into your product roadmap. Collect, prioritize, and ship features that actually matter to your users.

Zeitio

Tools

Time tracking and invoicing for freelancers and small teams. Free plan includes 1 user, 3 active projects and 3 invoices per month. • *[⬆️ Back to Top](#table-of-contents)**

Contentful

CMS

Headless CMS. Content management and delivery APIs in the cloud. Comes with one free Community space that includes five users, 25K records, 48 Content Types, 2 locales.

Cosmic

CMS

Headless CMS and API toolkit. Free personal plans for developers.

Crystallize

CMS

Headless PIM with ecommerce support. Built-in GraphQL API. The free version includes unlimited users, 1000 catalog items, 5 GB/month bandwidth, and 25k/month API calls.

DatoCMS

CMS

Offers free tier for small projects. DatoCMS is a GraphQL-based CMS. On the lower tier, you have 100k/month calls.

Hygraph

CMS

Offers free tier for small projects. GraphQL first API. Move away from legacy solutions to the GraphQL native Headless CMS - and deliver omnichannel content API first.

Prismic

CMS

Headless CMS. Content management interface with fully hosted and scalable API. The Community Plan provides unlimited API calls, documents, custom types, assets, and locales to one user. Everything that you need for your next project. Bigger free plans are available for Open Content/Open Source projects.

Sanity.io

CMS

Platform for structured content with an open-source editing environment and a real-time hosted data store. Unlimited projects. Unlimited admin users, three non-admin users, two datasets, 500K API CDN requests, 10GB bandwidth, and 5GB assets included for free per project.

Solo

CMS

Free AI website creator from Mozilla, create a beautiful website for your business from a few simple inputs. Free custom domain, no credit card needed.

Squidex

CMS

Offers free tier for small projects. API / GraphQL first. Open source and based on event sourcing (versing every change automatically).

Storyblok

CMS

A Headless CMS for developers and marketers that works with all modern frameworks. The Community (free) tier offers Management API, Visual Editor, ten sources, Custom Field Types, Internationalization (unlimited languages/locales), Asset Manager (up to 2500 assets), Image Optimizing Service, Search Query, Webhook + 250GB Traffic/month included.

TinaCMS

CMS

Replacing Forestry.io. Open source Git-backed headless CMS that supports Markdown, MDX, and JSON. The basic offer is free with two users available.

WPJack

CMS

Set up WordPress on any cloud in less than 5 minutes! The free tier includes 1 server, 2 sites, free SSL certificates, and unlimited cron jobs. No time limits or expirations-your website, your way. • *[⬆️ Back to Top](#table-of-contents)**

Appinvento

Code

A free no-code app builder. It provides complete access to the automatically generated backend source code and allows for unlimited APIs and routes. The free plan includes three projects and five tables.

DhiWise

Code

Converts Figma designs into dynamic Flutter and React applications. Its code generation technology is designed to optimize workflows for building production-ready mobile and web experiences.

Karbon Sites

Code

An AI-powered site builder and editor that generates production-ready frontend code from text prompts, sketches, or resumes. Features include native Android (APK) export and a free tier with 5 generations per month (unlimited via custom Gemini API key).

Metalama

Code

A C#-specific tool that generates boilerplate code on the fly during compilation to keep source code clean. It is free for open-source projects; its commercial-friendly free tier includes up to three aspects.

Supermaven

Code

A high-speed AI code completion plugin for VS Code, JetBrains, and Neovim. The free tier provides unlimited inline completions with a focus on ultra-low latency.

v0.dev

Code

Created by Vercel, v0 generates copy-and-paste friendly React code using shadcn/ui and Tailwind CSS. It uses a credit system, providing 1,200 starting credits and 200 free credits monthly. • *[⬆️ Back to Top](#table-of-contents)**

beanstalkapp.com

Code

A complete workflow to write, review, and deploy code), a free account for one user, and one repository with 100 MB of storage

codacy.com

Code

Automated code reviews for PHP, Python, Ruby, Java, JavaScript, Scala, CSS, and CoffeeScript, free for unlimited public and private repositories

Codeac.io

Code

Automated Infrastructure as Code review tool for DevOps integrates with GitHub, Bitbucket, and GitLab (even self-hosted). In addition to standard languages, it also analyzes Ansible, Terraform, CloudFormation, Kubernetes, and more. (open-source free)

codecov.io

Code

Code coverage tool (SaaS), free for Open Source and one free private repo

CodeFactor

Code

Automated Code Review for Git. The free version includes unlimited users, public repositories, and one private repo.

coderabbit.ai

Code

AI-powered code review tool that integrates with GitHub/GitLab. Free tier includes 200 files/hour, 3 reviews per hour, and 50 conversations/hour. Free forever for open source projects.

CodSpeed

Code

Automate performance tracking in your CI pipelines. Catch performance regressions before deployment, thanks to precise and consistent metrics. Free forever for Open Source projects.

coveralls.io

Code

Display test coverage reports, free for Open Source

deepscan.io

Code

Advanced static analysis for automatically finding runtime errors in JavaScript code, free for Open Source

DeepSource

Code

DeepSource continuously analyzes source code changes, finding and fixing issues categorized under security, performance, anti-patterns, bug-risks, documentation, and style. Native integration with GitHub, GitLab, and Bitbucket.

DiffText

Code

Instantly find the differences between two blocks of code. Completely free to use.

eversql.com

Code

EverSQL - The #1 platform for database optimization. Gain critical insights into your database and SQL queries automatically.

gerrithub.io

Code

Gerrit code review for GitHub repositories for free

goreportcard.com

Code

Code Quality for Go projects, free for Open Source

gtmetrix.com

Code

Reports and thorough recommendations to optimize websites

holistic.dev

Code

The #1 static code analyzer for Postgresql optimization. Performance, security, and architect database issues automatic detection service

houndci.com

Code

Comments on GitHub commits about code quality, free for Open Source

prquorum.com

Code

ai code review github app, free 50 reviews/month on 2 repos

reviewable.io

Code

Code review for GitHub repositories, free for public or personal repos.

scan.coverity.com

Code

Static code analysis for Java, C/C++, C# and JavaScript, free for Open Source

scrutinizer-ci.com

Code

Continuous inspection platform, free for Open Source

semanticdiff.com

Code

Programming language aware diff for GitHub pull requests and commits, free for public repositories

shields.io

Code

Quality metadata badges for open source projects

sonarcloud.io

Code

Automated source code analysis for Java, JavaScript, C/C++, C#, VB.NET, PHP, Objective-C, Swift, Python, Groovy and even more languages, free for Open Source

tomosu.ai

Code

Scores a repository or pull request with a 0-100 Production Reliability Index, plus fix suggestions and a merge verdict. Free for one repository (public or private) through the VS Code/Cursor plugin, web scan, and GitHub App PR comments. • *[⬆️ Back to Top](#table-of-contents)**

CodeKeep

Code

Google Keep for Code Snippets. Organize, Discover, and share code snippets, featuring a powerful code screenshot tool with preset templates and a linking feature.

libraries.io

Code

Search and dependency update notifications for 32 different package managers, free for open source

Namae

Code

Search various websites like GitHub, Gitlab, Heroku, Netlify, and many more for the availability of your project name.

tickgit.com

Code

Surfaces `TODO` comments (and other markers) to identify areas of code worth returning to for improvement. • *[⬆️ Back to Top](#table-of-contents)**

appcircle.io

CI

An enterprise-grade mobile DevOps platform that automates the build, test, and publish store of mobile apps for faster, efficient release cycle. Free for 30 minutes max build time per build, 20 monthly builds and 1 concurrent build.

appveyor.com

CI

CD service for Windows, free for Open Source

bitrise.io

CI

A CI/CD for mobile apps, native or hybrid. With 200 free builds/month 10 min build time and two team members. OSS projects get 45 min build time, +1 concurrency and unlimited team size.

buddy.works

CI

A CI/CD with five free projects and one concurrent run (120 executions/month)

Buildkite

CI

CI Pipelines free for 3 users and 5k job minutes/month. Test Analytics free developer tier includes 100k test executions/month, with more free inclusions for open-source projects.

bytebase.com

CI

Database CI/CD and DevOps. Free under 20 users and ten database instances

CircleCI

CI

Comprehensive free plan with all features included in a hosted CI/CD service for GitHub, GitLab, and BitBucket repositories. Multiple resource classes, Docker, Windows, Mac OS, ARM executors, local runners, test splitting, Docker Layer Caching, and other advanced CI/CD features. Free for up to 6000 minutes/month execution time, unlimited collaborators, 30 parallel jobs in private projects, and up to 80,000 free build minutes for Open Source projects.

cirun.io

CI

Free for public GitHub repositories

codemagic.io

CI

Free 500 build minutes/month

deployhq.com

CI

1 project with ten daily deployments (30 build minutes/month)

LocalOps

CI

Deploy your app on AWS/GCP/Azure in under 30 minutes. Setup standardised app environments on any cloud, which come with in-built continuous deployment automation and advanced observability. The free plan allows 1 user and 1 app environment.

Make

CI

The workflow automation tool lets you connect apps and automate workflows using UI. It supports many apps and the most popular APIs. Free for public GitHub repositories, and free tier with 100 Mb, 1000 Operations, and 15 minutes of minimum interval.

Mergify

CI

workflow automation and merge queue for GitHub - Free for public GitHub repositories

Nx Cloud

CI

Nx Cloud speeds up your monorepos on CI with features such as remote caching, distribution of tasks across machines and even automated splitting of your e2e test runs. It comes with a free plan for up to 30 contributors with generous 150k credits included.

RunMyJob

CI

Run GitHub Actions and GitLab CI pipelines smarter with real-time scaling Spike Instances. Free tier includes 400 vCPU-minutes, 800 GB-minutes, and 10 concurrent jobs with high-performance runners (12 vCPU and 32 GB RAM per job).

Shipfox

CI

Run your GitHub actions 2x faster, 3.000 build minutes free each month.

Spacelift

CI

Management platform for Infrastructure as Code. Free plan features: IaC collaboration, Terraform module registry, ChatOps integration, Continuous resource compliance with Open Policy Agent, SSO with SAML 2.0, and access to public worker pools: up to 200 minutes/month

Terramate

CI

Terramate is an orchestration and management platform for Infrastructure as Code (IaC) tools such as Terraform, OpenTofu, and Terragrunt. Free up to 2 users including all features.

Terrateam

CI

GitOps-first Terraform automation with pull request-driven workflows, project isolation via self-hosted runners, and layered runs for ordered operations. Free for up to 3 users.

Trigger.dev

CI

Open-source background jobs and AI agent platform with durable tasks, no timeouts, and realtime. Free plan includes $5 monthly compute credits, 20 concurrent runs, unlimited tasks, 5 team members, 10 schedules, and 1-day log retention. • *[⬆️ Back to Top](#table-of-contents)**

Appetize

Testing

Test your Android & iOS apps on this Cloud Based Android Phone / Tablets emulator and iPhone/iPad simulators directly in your browser. The free tier includes two concurrent session with 30 minutes of usage per month. No limit on app size.

Argos

Testing

Open Source visual testing for developers. Unlimitedprojects, with 5,000 screenshots per month. Free for open-source projects.

Bencher

Testing

A continuous benchmarking tool suite to catch CI performance regressions. Free for all public projects.

BugBug

Testing

Lightweight test automation tool for web applications. It is easy to learn and doesn't require coding. You can run unlimited tests on your own computer for free. You also get cloud monitoring and CI/CD integration for an additional monthly fee.

checkbot.io

Testing

Browser extension that tests if your website follows 50+ SEO, speed and security best practices. Free tier for smaller websites.

Checkly

Testing

Code-first synthetic monitoring for modern DevOps. Monitor your APIs and apps at a fraction of the price of legacy providers. Powered by a Monitoring as Code workflow and Playwright. Generous free tier for devs.

CORS-Tester

Testing

A free tool for developers and API testers to check if an API is CORS-enabled for a given domain and identify gaps. Get actionable insights.

cypress.io

Testing

Fast, easy and reliable testing for anything that runs in a browser. Cypress Test Runner is always free and open-source with no restrictions and limitations. Cypress Dashboard is free for open-source projects for up to 5 users.

everystep-automation.com

Testing

Records and replays all steps made in a web browser and creates scripts, free with fewer options

gridlastic.com

Testing

Selenium Grid testing with a free plan of up to 4 simultaneous selenium nodes/10 grid starts/4,000 test minutes/month

katalon.com

Testing

Provides a testing platform that can help teams of all sizes at different levels of testing maturity, including Katalon Studio, TestOps (+ Visual Testing free), TestCloud, and Katalon Recorder.

Keploy

Testing

Keploy is a functional testing toolkit for developers. Recording API calls generates E2E tests for APIs (KTests) and mocks or stubs(KMocks). It is free for Open Source projects.

Lastest

Testing

Ship fast. Don't break things. AI-supported visual verification and tests you can actually trust. Free forever plan: 1 project, 500 runner-minutes/mo, 1 concurrent run, no credit card.

loadmill.com

Testing

Automatically create API and load tests by analyzing network traffic. Simulate up to 50 concurrent users for up to 60 minutes for free monthly.

lost-pixel.com

Testing

holistic visual regression testing for your Storybook, Ladle, Histoire stories and Web Apps. Unlimited team members, totally free for open-source, 7,000 snapshots/month.

OpenWebhook

Testing

Temporary webhook URL and live inspector. No signup. Event history stays in the browser. Custom slugs and remote forwarding are paid.

pagegym.com

Testing

Load behaviour and page speed analysis and optimization tool. The free plan provides 10 tests per day, 5 experiments per week, and 15 GB of maximum ingested data per month.

percy.io

Testing

Add visual testing to any web app, static site, style guide, or component library. Unlimited team members, Demo app, and unlimited projects, 5,000 snapshots/month.

qase.io

Testing

Test management system for Dev and QA teams. Manage test cases, compose test runs, perform tests, track defects, and measure impact. The free tier includes all core features, with 500MB available for attachments and up to 3 users.

Repeato

Testing

No-code mobile app test automation tool built on top of computer vision and AI. Works for native apps, flutter, react-native, web, ionic, and many more app frameworks. The free plan is limited to 10 tests for iOS and 10 for Android, but includes most of the features of the paid plans, including unlimited test runs.

Requestly

Testing

Open-source Chrome Extension to Intercept, Redirect and Mock HTTP Requests. Featuring [Debugger](https://requestly.com/products/web-debugger/), [Mock Server](https://requestly.com/products/mock-server/), [API Client](https://requestly.com/products/api-client/) and [Session Recording](https://requestly.com/products/session-book/). Redirect URLs, Modify HTTP Headers, Mock APIs, Inject custom JS, Modify GraphQL Requests, Generate Mock API Endpoints, Record session with Network & Console Logs. Create upto 10 rules in Free Tier. Free for open-source.

Sample Files

Testing

Collection of free test files across video, audio, document and archive formats, useful for testing and QA.

seotest.me

Testing

Free on-page SEO website tester. 10 free website crawls per day. Useful SEO learning resources and recommendations on how to improve the on-page SEO results for any website regardless of technology.

Sherlo

Testing

Visual regression testing for React Native apps. Free plan: 1,000 snapshots/month, iOS & Android simulators.

snippets.uilicious.com

Testing

It's like CodePen but for cross-browser testing. UI-licious lets you write tests like user stories and offers a free platform - UI-licious Snippets - that allows you to run unlimited tests on Chrome with no sign-up required for up to 3 minutes per test run. Found a bug? You can copy the unique URL to your test to show your devs exactly how to reproduce the bug.

SSR (Server-side Rendering) Checker

Testing

Check SSR (server-side rendering) for any URL by visually comparing the server rendered version of the page with the regular version.

stateofpixel

Testing

Catch UI regressions before they merge. Your CI takes the screenshots with Playwright, Storybook or any tool that writes PNGs, and a person approves each change on the pull request. Open source and self-hostable. Free up to 10 GB.

testingbot.com

Testing

Selenium Browser and Device Testing, [free for Open Source](https://testingbot.com/open-source)

Testspace.com

Testing

A Dashboard for publishing automated test results and a Framework for implementing manual tests as code using GitHub. The service is [free for Open Source](https://github.com/marketplace/testspace-com) and accounts for 450 monthly results.

tesults.com

Testing

Test results reporting and test case management. Integrates with popular test frameworks. Open Source software developers, individuals, educators, and small teams getting started can request discounted and free offerings beyond basic free projects.

UseWebhook.com

Testing

Capture and inspect webhooks from your browser. Forward to localhost, or replay from history. Free to use.

Vaadin

Testing

Build scalable UIs in Java or TypeScript, and use the integrated tooling, components, and design system to iterate faster, design better, and simplify the development process. Unlimited Projects with five years of free maintenance.

VibeView

Testing

Browser-based iOS, Android, Apple TV and Android TV simulators with AI-powered test automation from a recorded flow or plain-language instructions. Free tier includes two concurrent sessions and 30 minutes of streaming per month. Bringing your own API key bypasses the included AI usage credit.

webhook.site

Testing

Verify webhooks, outbound HTTP requests, or emails with a custom URL. A temporary URL and email address are always free.

websitepulse.com

Testing

Various free network and server tools.

kogiQA

Testing

A web UI automation tool that functions without the need for selectors. Every developer gets 500 actions per month for free. • *[⬆️ Back to Top](#table-of-contents)**

aikido.dev

Security

All-in-one appsec platform covering SCA, SAST, CSPM, DAST, Secrets, IaC, Malware, Container scanning, EOL,... Free plan includes two users, scanning of 10 repos, 1 cloud, 2 containers & 1 domain.

CertKit

Security

Manage SSL Certificate issuance, renewal, and monitoring. Search the Certificate Transparency Logs. Free for 3 certificates and 1 user after the beta.

CertObserver CT Search

Security

Find public SSL/TLS certificates recorded in Certificate Transparency logs. CT search is free but CT monitoring is not.

CertPost

Security

Live SSL/TLS certificate monitoring on port 443 or custom ports (SMTP/IMAP). Reads the served certificate on the wire, full chain verification, and alerts via email or webhook before expiration. Free tier includes 3 certificates monitored forever.

Corgea

Security

Free autonomous security platform that finds, validates and fixes insecure code and packages across +20 languages and frameworks. Free plan includes 1 user and 2 repos.

crypteron.com

Security

Cloud-first, developer-friendly security platform prevents data breaches in .NET and Java applications

CyberChef

Security

A simple, intuitive web app for analyzing and decoding/encoding data without dealing with complex tools or programming languages. Like a Swiss army knife of cryptography & encryption. All features are free to use, with no limit. Open source if you wish to self-host.

Datree

Security

Open Source CLI tool to prevent Kubernetes misconfigurations by ensuring that manifests and Helm charts follow best practices as well as your organization’s policies

Dependabot

Security

Automated dependency updates for Ruby, JavaScript, Python, PHP, Elixir, Rust, Java (Maven and Gradle), .NET, Go, Elm, Docker, Terraform, Git Submodules, and GitHub Actions.

DJ Checkup

Security

Scan your Django site for security flaws with this free, automated checkup tool. Forked from the Pony Checkup site.

Doppler

Security

Universal Secrets Manager for application secrets and config, with support for syncing to various cloud providers. Free for five users with basic access controls.

Dotenv

Security

Sync your .env files, quickly & securely. Stop sharing your .env files over insecure channels like Slack and email, and never lose an important .env file again. Free for up to 3 teammates.

GitGuardian

Security

Keep secrets out of your source code with automated secrets detection and remediation. Scan your git repos for 350+ types of secrets and sensitive files - Free for individuals and teams of 25 developers or less.

HasMySecretLeaked

Security

Search across 20 million exposed secrets in public GitHub repositories, gists, issues,and comments for Free

Have I been pwned?

Security

REST API for fetching the information on the breaches.

HimitsuShell

Security

A shell script DRM compiler that converts shell scripts into obfuscated binaries using an embedded shell interpreter and anti-debugging (alternative to shc). Free unlimited web edition.

hostedscan.com

Security

Online vulnerability scanner for web applications, servers, and networks. Ten free scans per month.

Infisical

Security

Open source platform that lets you manage developer secrets across your team and infrastructure: everywhere from local development to staging/production 3rd-party services. Free for up to 5 developers.

inspect.software

Security

Public record of automated open-source repository audits: security posture, maintainability, dependency health, and malicious-package checks, with a versioned methodology and grade badges. Free tier: full access to all published reports, automatic coverage of repositories above the public-interest threshold (≥500 stars, ≥50 forks, or org-owned with ≥250 stars), embeddable badges, and 100 starting credits (5 inspections) for below-threshold repositories.

Internet.nl

Security

Test for modern Internet Standards like IPv6, DNSSEC, HTTPS, DMARC, STARTTLS and DANE

IntoDNS.ai

Security

DNS and email security analyzer that checks SPF, DKIM, DMARC, DNSSEC, BIMI, MTA-STS, and 40+ blacklists with AI-powered explanations and fix suggestions. 100% free, no signup required.

letsencrypt.org

Security

Free SSL Certificate Authority with certs trusted by all major browsers

meterian.io

Security

Monitor Java, Javascript, .NET, Scala, Ruby, and NodeJS projects for security vulnerabilities in dependencies. Free for one private project, unlimited projects for open source.

Mozilla Observatory

Security

Find and fix security vulnerabilities in your site.

Otterwatch

Security

Daily SSL/TLS certificate monitoring: expiry alerts (30/7/1 day), chain and OCSP revocation checks, and certificate transparency issuance history. Free forever for 5 domains, no credit card.

Protectumus

Security

Free website security check, site antivirus, and server firewall (WAF) for PHP. Email notifications for registered users in the free tier.

Public Cloud Threat Intelligence

Security

High confidence Indicator of Compromise(IOC) targeting public cloud infrastructure, A portion is available on github (https://github.com/unknownhad/AWSAttacks). Full list is available via API

pyup.io

Security

Monitor Python dependencies for security vulnerabilities and update them automatically. Free for one private project, unlimited projects for open source.

qualys.com

Security

Find web app vulnerabilities, audit for OWASP Risks

SikkerKey

Security

Machine authenticated secrets manager, includes 2 projects, 2 bootstrapped machines, 20 secrets and 7 days audit log retention for free.