Discover the Best Open-Source Openapi Projects Sorted by Stars

FastAPI framework, high performance, easy to learn, fast to code, ready for production

The OpenAPI Specification Repository

Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.

📘 OpenAPI/Swagger-generated API Reference Documentation

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

gRPC to JSON proxy generator following the gRPC HTTP spec

swagger-codegen contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition.

Full stack, modern web application generator. Using FastAPI, PostgreSQL as database, Docker, automatic HTTPS and more.

Automatically generate RESTful API documentation with Swagger 2.0 for Go.

Swagger Editor

Create REST and GraphQL APIs, scaffold Jamstack webapps, stream changes in real-time.

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.

Automated JSON API documentation for API's built with Spring

Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

Design-based APIs and microservices in Go

💨 Fast, Async-ready, Openapi, type hints based framework for building APIs

package for building REST-style Web Services using Go

LoopBack makes it easy to build modern API applications that require complex integrations.

Automagically reverse-engineer REST APIs via capturing traffic