Top 12 Open-Source Alternatives to Flask

Flask

a microframework for Python based on Werkzeug, Jinja 2 and good intentions.

As Flask is an open source project, you can find more open source alternatives and stats on LibHunt.

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Open Source

Alternatives Status Page

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Product categories

API Tools Developer Tools Frameworks (Full Stack) JavaScript JavaScript Framework MVC Framework Node.js Framework PHP Framework PHP MVC Framework PHP Web Framework Python Web Framework Web Frameworks

Summary

The top open-source alternatives to Flask are Django, Laravel, and Ruby on Rails. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Django Landing Page
1

Django

The Web framework for perfectionists with deadlines
Pricing:
- Open Source
#Frameworks (Full Stack) #Web Frameworks #Python Web Framework 15 social mentions
Laravel Landing Page
2

Laravel

A PHP Framework For Web Artisans
Pricing:
- Open Source
#PHP Framework #Web Frameworks #Developer Tools 240 social mentions
Ruby on Rails Landing Page
3

Ruby on Rails

Ruby on Rails is an open source full-stack web application framework for the Ruby programming...
Pricing:
- Open Source
#Frameworks (Full Stack) #Ruby Web Framework #Web Frameworks 143 social mentions
ExpressJS Landing Page
4

ExpressJS

Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple
Pricing:
- Open Source
#Web Frameworks #JavaScript Framework #JavaScript 470 social mentions
CodeIgniter Landing Page
5

CodeIgniter

A Fully Baked PHP Framework
Pricing:
- Open Source
#Frameworks (Full Stack) #Web Frameworks #Developer Tools 10 social mentions
Meteor Landing Page
6

Meteor

Meteor is a set of new technologies for building top-quality web apps in a fraction of the time.
Pricing:
- Open Source
#Web Frameworks #Developer Tools #PHP MVC Framework 13 social mentions
Yii Framework Landing Page
7

Yii Framework

Yii is a high-performance component-based PHP framework best for Web 2.0 development.
Pricing:
- Open Source
#PHP Framework #Web Frameworks #Developer Tools
CakePHP Landing Page
8

CakePHP

The Rapid Development Framework for PHP
Pricing:
- Open Source
#Frameworks (Full Stack) #Web Frameworks #MVC Framework 10 social mentions
Shiny Landing Page
9

Shiny

Shiny is an R package that makes it easy to build interactive web apps straight from R.
Pricing:
- Open Source
#Web Frameworks #Developer Tools #PHP MVC Framework 34 social mentions
Grails Landing Page
10

Grails

An Open Source, full stack, web application framework for the JVM
Pricing:
- Open Source
#Web Frameworks #Developer Tools #PHP MVC Framework 6 social mentions
hapi.js Landing Page
11

hapi.js

Server Framework for Node.js
Pricing:
- Open Source
#Web Frameworks #Developer Tools #PHP MVC Framework 29 social mentions
FastAPI Landing Page
12

FastAPI

FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.
Pricing:
- Open Source
- Free
#API Tools #Web Frameworks #Developer Tools 289 social mentions