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Best Open Source openapi Libraries

A curated list of the most popular GitHub repositories tagged with openapi. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1open-webui/open-webui

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

124,513Python
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#2fastapi/fastapi

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

95,415Python
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#3fastapi/full-stack-fastapi-template

Full stack, modern web application template. Using FastAPI, React, SQLModel, PostgreSQL, Docker, GitHub Actions, automatic HTTPS and more.

41,648TypeScript
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#4usebruno/bruno

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

41,015JavaScript
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#5OAI/OpenAPI-Specification

The OpenAPI Specification Repository

30,942Markdown
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#6swagger-api/swagger-ui

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

28,637JavaScript
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#7OpenAPITools/openapi-generator

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

25,848Java
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#8Redocly/redoc

πŸ“˜ OpenAPI/Swagger-generated API Reference Documentation

25,507TypeScript
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#9grpc-ecosystem/grpc-gateway

gRPC to JSON proxy generator following the gRPC HTTP spec

19,823Go
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#10scalar/scalar

Scalar is an open-source API platform:γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€πŸŒ Modern Rest API Clientγ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€πŸ“– Beautiful API Referencesγ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€γ€€βœ¨ 1st-Class OpenAPI/Swagger Support

14,003TypeScript
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#11swaggo/swag

Automatically generate RESTful API documentation with Swagger 2.0 for Go.

12,616Go
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#12alufers/mitmproxy2swagger

Automagically reverse-engineer REST APIs via capturing traffic

9,242HTML
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#13api-platform/api-platform

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

9,113TypeScript
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#14vitalik/django-ninja

πŸ’¨ Fast, Async-ready, Openapi, type hints based framework for building APIs

8,913Python
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