Open source swagger projects
Every project in the registry tagged swagger, ranked by real GitHub adoption.
📘 OpenAPI/Swagger-generated API Reference Documentation
gRPC to JSON proxy generator following the gRPC HTTP spec
Open-source API documentation and testing platform
Automatically generate RESTful API documentation with Swagger 2.0 for Go.
💨 Fast, Async-ready, Openapi, type hints based framework for building APIs
Generate TypeScript types from OpenAPI 3 specs
Examples and server integrations for generating the Swagger API Specification, which enables easy access to your REST API
The Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript.
Design-first Go framework that generates API code, documentation, and clients. Define once in an elegant DSL, deploy as HTTP and gRPC services with zero drift b
👨🚀 Turn API specifications into production-ready SDKs, validators, mocks, and more. 20+ plugins. Millions of weekly npm downloads. Used by Vercel, OpenCode,
OpenAPI (f.k.a Swagger) Specification code generator. Supports C#, PowerShell, Go, Java, Node.js, TypeScript, Python
Connexion is a modern Python web framework that makes spec-first and api-first development easy.
Simple, Fast, Code first and Compile time generated OpenAPI documentation for Rust
Catch API bugs before your users do
🕸️ GraphQL Federation Framework for any API services such as REST, OpenAPI, Swagger, SOAP, gRPC and more...
NodeJS library that generates Typescript or Javascript clients based on the OpenAPI specification
OpenAPI 3.0 and 3.1 and 3.2 (and Swagger v2) implementation for Go (parsing, converting, validation, and more)
The source for REST API specifications for Microsoft Azure.
OpenApi or Swagger integration to Laravel
Generates documentation for your REST API from attributes
Modern Laravel OpenAPI (Swagger) documentation generator. No PHPDoc annotations required.
A REST API library with better functionality, performance, and scalability than refit
RapiDoc -WebComponent for OpenAPI Spec
Generates swagger/openapi specification based on jsDoc comments and YAML files.
A library that generates OpenAPI (Swagger) docs from Zod schemas
Framework for building high quality, interactive API documentation.
Related tags
Frequently asked questions
How many open source swagger projects are there?
This registry tracks 26 projects tagged swagger, with 165,865 GitHub stars between them. The most-adopted is redoc at 25,998 stars.
Are these swagger projects free to use?
Yes — 26 of the 26 carry an explicit open-source licence across 3 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 swagger 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 swagger projects still maintained?
25 of the 26 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.