The OpenAPI Specification (OAS), previously known as the Swagger Specification, is a specification for a programming language-agnostic, machine-readable interface definition language for describing, producing, consuming, and visualizing web services. OpenAPI documents describe API services and are represented in YAML or JSON formats.
User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)
Full-stack web application template with FastAPI, React, SQLModel, PostgreSQL, Vite, Tailwind CSS, shadcn/ui, FastAPI Cloud, and Docker Compose.
Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
📘 OpenAPI/Swagger-generated API Reference Documentation
gRPC to JSON proxy generator following the gRPC HTTP spec
The Cloud-Native API Gateway and AI Gateway
Scalar is an open-source API platform: 🌐 Modern REST API Client 📖 Beautiful API References ✨ 1st-Class OpenAPI/Swagger Support
Automatically generate RESTful API documentation with Swagger 2.0 for Go.
Expose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth!
Automagically reverse-engineer REST APIs via capturing traffic
🕸️ Create REST and GraphQL APIs, scaffold Jamstack webapps, stream changes in real-time.
💨 Fast, Async-ready, Openapi, type hints based framework for building APIs
Generate Go client and server boilerplate from OpenAPI 3 specifications
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
Generate TypeScript types from OpenAPI 3 specs
Created by OpenAPI Initiative, Tony Tam, Darrel Miller, Mike Ralphson, Ron Ratovsky, Uri Sarid, Jason Harmon
Released August 10, 2011
Latest release 11 months ago