fastapi VS swagger-ui

Compare fastapi vs swagger-ui and see what are their differences.


Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API. (by swagger-api)
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fastapi swagger-ui
462 131
70,541 25,476
- 1.0%
9.7 9.8
6 days ago 8 days ago
Python JavaScript
MIT License Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of fastapi. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-03-18.


Posts with mentions or reviews of swagger-ui. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-04-11.
  • Simplifying Angular Development with Swagger: A Step-by-Step Guide
    3 projects | | 11 Apr 2024
    Swagger is a fantastic open-source toolset that's perfect for developing and describing RESTful APIs. It offers you a user-friendly interface to understand a service's capabilities without needing to dig into the code. It even provides a way for you to interact directly with the API, which means you get to test its functionality.
  • Open API with Postman
    3 projects | | 22 Mar 2024
    The API had an OpenAPI endpoint built with Swagger where I could download a JSON specification file for the API.
  • Best Software Documentation Tools
    4 projects | | 5 Feb 2024
    Swagger is a widely used tool for documenting and testing APIs.
  • How to Automatically Consume RESTful APIs in Your Frontend
    13 projects | | 25 Jan 2024
    Swagger is an open-source software framework that implements the OpenAPI Specification—an API description format for REST APIs. The OpenAPI Specification defines a standard, language-agnostic interface to HTTP APIs, enabling both humans and computers to discover and understand the capabilities of the API.
  • Embracing API-First Development: Building the Future of Software
    2 projects | | 24 Jan 2024
    Mocking and Testing: Once the API design is complete, developers create mock APIs to simulate the behavior of the actual services. This early testing phase helps identify any issues or mismatches between design and implementation before substantial development efforts are invested. Tools like Postman or Swagger are invaluable for API testing and validation.
  • Craft OpenAPI Specs & Production-Ready SDKs with Fastify
    5 projects | | 9 Nov 2023
    import fp from "fastify-plugin"; import swagger from "@fastify/swagger"; export default fp(async (fastify) => { fastify.register(swagger, { openapi: { info: { tags: [ { name: "drinks", description: "Drink-related endpoints", externalDocs: { description: "Find out more", url: "", }, }, ], }, }, }); });
  • Como deixar o Swagger com tema dark mode usando NestJS
    2 projects | | 5 Nov 2023
  • Munca in QA manual
    1 project | /r/programare | 11 Jul 2023
  • ChatGPT: how I used it to convert HTTP requests to OpenAPI document
    2 projects | | 10 Jul 2023
    A very requested feature for Sharkio was the auto-generation of OpenAPI documentation using the recorded HTTP requests - to create standardized documentation.
  • What do people with a degree in computer science do at work?
    2 projects | /r/compsci | 25 Jun 2023
    Automation QA is a lot of the same duties as manual QA, but instead of writing and executing the test plans manually, we create and update automated tests that can run those validations programmatically, for example by using Selenium to automatically fill out and submit forms for a web application, or using Postman and/or Swagger to generate an API conversation test.

What are some alternatives?

When comparing fastapi and swagger-ui you can also consider the following projects:

AIOHTTP - Asynchronous HTTP client/server framework for asyncio and Python

ReDoc - 📘 OpenAPI/Swagger-generated API Reference Documentation [Moved to:]

HS-Sanic - Async Python 3.6+ web server/framework | Build fast. Run fast. [Moved to:]

redoc - 📘 OpenAPI/Swagger-generated API Reference Documentation

Tornado - Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.

fiber-swagger - fiber middleware to automatically generate RESTful API documentation with Swagger 2.0.

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

prism - Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.

Flask - The Python micro framework for building web applications.

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

Django - The Web framework for perfectionists with deadlines.

utoipa - Simple, Fast, Code first and Compile time generated OpenAPI documentation for Rust