GitHub stars · StarDay

1OAI / OpenAPI-SpecificationThe OpenAPI Specification RepositoryMarkdownApache-2.0 · Permissive31,304

2swagger-api / swagger-uiSwagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.JavaScriptApache-2.0 · Permissive29,074

3OpenAPITools / openapi-generatorOpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)JavaApache-2.0 · Permissive26,850

4Redocly / redoc📘 OpenAPI/Swagger-generated API Reference DocumentationTypeScriptMIT · Permissive26,000

5Evil0ctal / Douyin_TikTok_Download_API🚀 Self-hosted Douyin, TikTok, Bilibili data collection and watermark-free video download API, supports AI agent calling through MCP and offline voice-to-text, and one-click deployment with Docker. | Self-hosted TikTok, Douyin & Bilibili scraper and no-watermark video downloader — async REST API, MCP server for AI agents, CLI and web console, plus offline speech-to-text for downloaded videos. Self-healing identity pool, PostgreSQL archive, one docker compose up.PythonApache-2.0 · Permissive21,218

6grpc-ecosystem / grpc-gatewaygRPC to JSON proxy generator following the gRPC HTTP specGoBSD-3-Clause · Permissive20,011

7scalar / scalarAn API platform combining a REST client, API references, and OpenAPI support.TypeScriptMIT · Permissive16,364

8swaggo / swagAutomatically generate RESTful API documentation with Swagger 2.0 for Go.GoMIT · Permissive13,049

9alufers / mitmproxy2swaggerAutomagically reverse-engineer REST APIs via capturing trafficHTMLLicense not declared9,691

10vitalik / django-ninja💨 Fast, Async-ready, Openapi, type hints based framework for building APIsPythonMIT · Permissive9,234

11api-platform / api-platform🕸️ Create REST and GraphQL APIs, scaffold Jamstack webapps, stream changes in real-time.PHPMIT · Permissive9,199

12oapi-codegen / oapi-codegenGenerate Go client and server boilerplate from OpenAPI 3 specificationsGoApache-2.0 · Permissive8,639

13litestar-org / litestarLight, flexible and extensible ASGI framework | Built to scalePythonMIT · Permissive8,535

14mockoon / mockoonMockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.TypeScriptMIT · Permissive8,468

15openapi-ts / openapi-typescriptGenerate TypeScript types from OpenAPI 3 specsTypeScriptMIT · Permissive8,426

16swagger-api / swagger-coreExamples and server integrations for generating the Swagger API Specification, which enables easy access to your REST APIJavaApache-2.0 · Permissive7,534

17RicoSuter / NSwagThe Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript.C#MIT · Permissive7,368

18oomol-lab / open-connectorOpen-source auth gateway connecting 1500+ SaaS providers to AI agents through SDK, CLI, MCP, HTTP, and OpenAPI.TypeScriptLicense not declared6,167

19goadesign / goaDesign-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 between code and docs.GoMIT · Permissive6,121

20samchon / typiaSuper-fast/easy runtime validators and serializers via transformationTypeScriptMIT · Permissive5,962