Open source rest-api projects
Every project in the registry tagged rest-api, ranked by real GitHub adoption.
Sleek, intuitive API development and testing platform
Transform databases into intuitive spreadsheets instantly
Lightweight, fast, and open-source API client for developers
Powerful API development and testing made effortless
Simple, fast, and secure push notifications for all
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec
🚀 Self-hosted TikTok & Douyin scraper and no-watermark video downloader — async REST API, MCP server, CLI and web console for posts, profiles, comments and pla
gRPC to JSON proxy generator following the gRPC HTTP spec
Open-source API documentation and testing platform
Low code web framework for real world applications, in Python and Javascript
💨 Fast, Async-ready, Openapi, type hints based framework for building APIs
CakePHP: The Rapid Development Framework for PHP - Official Repository
Headless open-source eCommerce platform on top of PHP/Symfony/API Platform
Examples and server integrations for generating the Swagger API Specification, which enables easy access to your REST API
Intercept, modify, and debug HTTP(S) requests effortlessly
The definitive self-hosted URL shortener
MediaCMS is a modern, fully featured open source video and media CMS, written in Python/Django and React, featuring a REST API.
Free open-source appointment booking for any business
Open source agency management tool for streamlined success
📱The official Wikipedia app for Android!
Offline-First Minimalistic HTTP & Socket Testing Client for the Web & Desktop
Terminal API client for HTTP, GraphQL and gRPC. Plain .http files you can diff and version, with workflows, mocks, profiling, tracing, OpenAPI import, SSH tunne
Open-source changelog & roadmap platform for teams
Transform documentation with developer-focused simplicity
Related tags
Frequently asked questions
How many open source rest-api projects are there?
This registry tracks 24 projects tagged rest-api, with 427,378 GitHub stars between them. The most-adopted is Hoppscotch at 80,331 stars.
Are these rest-api projects free to use?
Yes — 21 of the 24 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which rest-api project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these rest-api projects still maintained?
23 of the 24 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.