FastAPI Alternatives

FastAPI is described as 'modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints' and is an app in the development category. There are more than 10 alternatives to FastAPI for a variety of platforms, including Mac, Windows, Linux, Python and Online / Web-based. The best alternative is Django, which is both free and Open Source. Other great apps like FastAPI are Flask, ASP.NET, Pyramid and Sinatra.

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FastAPI

Free • Open Source

Mac
Windows
Linux
Self-Hosted

FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python...

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Django
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Free • Open Source
Mac
Windows
Linux
BSD
Python
47 alternatives to Django
Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. Built by experienced developers, it takes care of much of the hassle of Web development, so you can focus on writing your app without needing to reinvent the wheel.
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Django Features
Security focused
OOP
Content syndication
Access Control
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Flask
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No
Free • Open Source
Mac
Windows
Linux
Online
Python
17 alternatives to Flask
Flask is a lightweight web application framework written in Python and based on the Werkzeug WSGI toolkit and Jinja2 template engine. There is no database abstraction layer, form validation, or any other components where third-party libraries already exist to provide common...
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Flask Features
1. LightweightFlask consumes less device resources compared to similar apps.
Small-footprint
ASP.NET
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No
Free • Open Source
Windows
Linux
Mac
45 alternatives to ASP.NET
Asp.net is an open source server-side Web application framework designed for Web development to produce dynamic Web pages, web sites, apps and services with HTML, CSS and JavaScript. You can also create Web APIs, mobile sites, use real-time technologies like Web Sockets and more!
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ASP.NET Features
Server-side
Rad
NET Framework
Pyramid
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Yes
No
Free • Open Source
Mac
Windows
Linux
Online
Python
35 alternatives to Pyramid
Pyramid is an open source web framework written in Python and is based on WSGI. It is a minimalistic web framework inspired by Zope, Pylons and Django.

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Sinatra
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Yes
No
Free • Open Source
Mac
Windows
Linux
Online
Ruby
7 alternatives to Sinatra
Sinatra is a free and open source software web application library and domain-specific language written in Ruby. It is an alternative to other Ruby web application frameworks such as Ruby on Rails, Merb, Nitro, Camping, and Rango. It is dependent on the Rack web server interface.
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Sinatra Features
Ruby
Falcon framework
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No
Free • Open Source
Mac
Windows
Linux
8 alternatives to Falcon framework
Falcon is a bare-metal Python web API framework for building very fast app backends and microservices.
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Falcon framework Features
REST API
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Bottle
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No
Free • Open Source
Mac
Windows
Linux
Python
7 alternatives to Bottle
Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. It is distributed as a single file module and has no dependencies other than the Python Standard Library.

Bottle has no features, suggest some!
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TurboGears
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No
Free • Open Source
Mac
Windows
Linux
Python
15 alternatives to TurboGears
TurboGears 2 is built on top of the experience of several next generation web frameworks including TurboGears 1 (of course), Django, and Rails. All of these frameworks had limitations that frustrated us, and TG2 was built as an answer to that frustration:

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Pylons Framework
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Yes
No
Free • Open Source
Mac
Windows
Linux
Online
34 alternatives to Pylons Framework
Pylons Framework is an open source Web application framework written in Python. It makes extensive use of the Web Server Gateway Interface standard to promote reusability and to separate functionality into distinct modules.

Pylons Framework has no features, suggest some!
Discontinued
"It's highly recommended that new projects start with the new merged web framework, Pyramid."https://pylonsproject.org/about-pylons-framework.html
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Play Framework
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No
Free • Open Source
Mac
Windows
Linux
22 alternatives to Play Framework
Play Framework is an open-source web application framework which follows the model–view–controller architectural pattern. It is written in Scala and usable from other programming languages that are compiled to JVM Bytecode, e.g. Java.
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Play Framework Features
Asynchronous
Rad
Backend
Modular System
Selenium testing
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Showing 10 of 11 alternatives

Django Features

Flask Features

ASP.NET Features

Sinatra Features

Falcon framework Features

Play Framework Features