Top 20 Python API Frameworks with OpenAPI Support

1. Robyn

   1 71 5,493 9.0 Python

   Robyn is a Super Fast Async Python Web Framework with a Rust runtime.

   

   It seems like every month, a new Python web framework is launched - with a new set of features, better performance, or a cleaner syntax than its predecessors. One feature that often gets ignored, however, is OpenAPI support. We've talked at great lengths about the benefits of OpenAPI - including marketing your API - but in short, OpenAPI generation via web framework is the best way to make sure your API documentation matches your API implementation. It seems like newer frameworks are starting to realize the importance of OpenAPI - with some frameworks like Robyn, adding OpenAPI docs generation as a part of the beta.

2. CodeRabbit

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3. uvicorn

   2 65 8,971 8.5 Python

   An ASGI web server, for Python. 🦄

   

   Uvicorn is a lightning-fast ASGI server implementation, using uvloop and httptools. It is designed to run asynchronous Python web applications, particularly those built with frameworks like FastAPI, Starlette, and others.

4. drf-yasg

   3 10 3,465 7.4 Python

   Automated generation of real Swagger/OpenAPI 2.0 schemas from Django REST Framework code.

   

   Third-Party Packages: OpenAPI support via packages like drf-yasg (OpenAPI 2.x / Swagger) and drf-spectacular (OpenAPI 3.x).

5. starlette

   4 68 10,750 9.1 Python

   The little ASGI framework that shines. 🌟

   

   Starlette is a lightweight ASGI framework/toolkit, ideal for building high-performance async services in Python. It provides the essential components needed to build web applications, including routing, middleware, sessions, and more.

6. drf-spectacular

   5 10 2,536 7.6 Python

   Sane and flexible OpenAPI 3 schema generation for Django REST framework.

   

   Third-Party Packages: OpenAPI support via packages like drf-yasg (OpenAPI 2.x / Swagger) and drf-spectacular (OpenAPI 3.x).

7. BlackSheep

   6 7 2,111 6.2 Python

   Fast ASGI web framework for Python

   

   BlackSheep is an asynchronous web framework to build event-based web applications with Python.

8. APIFairy

   7 5 329 2.9 Python

   A minimalistic API framework built on top of Flask, Marshmallow and friends.

   

   Extensions Required: Uses extensions like APIFairy, or Flask-Smorest for OpenAPI support.

9. SaaSHub

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10. flask-smorest

    8 6 685 8.6 Python

    DB agnostic framework to build auto-documented REST APIs with Flask and marshmallow

    

    Extensions Required: Uses extensions like APIFairy, or Flask-Smorest for OpenAPI support.

11. django-rest-framework

    9 204 28,933 8.2 Python

    Web APIs for Django. 🎸

    

    Django REST Framework is a powerful and flexible toolkit for building Web APIs using Django, the popular high-level Python web framework. Zuplo proudly sponsors the DRF project to continue improving the Django API development ecosystem.

12. eve-swagger

    10 1 153 - Python

    Swagger extension for Eve-powered RESTful APIs

    

    Extension Required: Uses eve-swagger to generate Swagger/OpenAPI documentation.

13. falcon-openapi

    11 1 5 - Python

    An OpenAPI first approach to Falcon APIs

    

    Extensions Required: Libraries like falcon-openapi or falcon-apispec enable OpenAPI support. It's worth noting that it's been many years since either of these extensions have been updated.

14. falcon-apispec

    12 2 44 0.0 Python

    apispec plugin that generates OpenAPI specification (aka Swagger Docs) for Falcon web applications.

    

    Extensions Required: Libraries like falcon-openapi or falcon-apispec enable OpenAPI support. It's worth noting that it's been many years since either of these extensions have been updated.

15. Pyramid

    13 19 4,021 3.7 Python

    Pyramid - A Python web framework

    

    Pyramid is a small, fast, down-to-earth Python web framework. It is designed to make creating web applications easier.

16. bottle-swagger

    14 1 32 - Python

    A Bottle plugin for Swagger REST APIs

    

    Extensions Required: Use bottle-swagger or bottle-openapi-3.

17. bottle-openapi-3

    15 1 3 - Python

    OpenAPI 3.0 Support for the Bottle Web Framework

    

    Extensions Required: Use bottle-swagger or bottle-openapi-3.

18. pyramid_openapi3

    16 2 84 7.7 Python

    Pyramid addon for OpenAPI3 validation of requests and responses.

    

    Extensions Required:pyramid_openapi3 is the latest extension, while others use Yelp's pyramid_swagger. If you use cornice to build APIs on top of Pyramid, you can use the cornice-swagger extension to add OpenAPI support.

19. pyramid_swagger

    17 1 64 4.4 Python

    Convenient tools for using Swagger to define and validate your interfaces in a Pyramid webapp.

    

    Extensions Required:pyramid_openapi3 is the latest extension, while others use Yelp's pyramid_swagger. If you use cornice to build APIs on top of Pyramid, you can use the cornice-swagger extension to add OpenAPI support.

20. responder

    18 1 3,605 8.6 Python

    A familiar HTTP Service Framework for Python. (by kennethreitz)

    

    Responder is a web framework for Python that aims to bring the best of Flask, Falcon, and others into one.

21. tornado-swagger

    19 1 104 3.1 Python

    Swagger API Documentation builder for tornado server.

    

    Extensions Required: Use tornado-swagger or similar libraries.

22. fastapi

    20 531 82,097 9.9 Python

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

    

    FastAPI is a modern, high-performance web framework for building APIs with Python 3.6+ based on standard Python type hints. It is designed for quick development and high efficiency. Zuplo is a proud sponsor of the FastAPI project, to help drive API development in Python.

23. connexion

    21 24 4,524 7.5 Python

    Connexion is a modern Python web framework that makes spec-first and api-first development easy.

    

    Connexion is a framework that automagically handles HTTP requests based on OpenAPI specification, built on top of Flask.

24. SaaSHub

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