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
Catch API bugs before your users do
Related tags
Frequently asked questions
How many open source swagger projects are there?
This registry tracks 12 projects tagged swagger, with 127,452 GitHub stars between them. The most-adopted is redoc at 25,913 stars.
Are these swagger projects free to use?
Yes — 12 of the 12 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?
12 of the 12 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.