CodeIgniter

PHP (version 4 or 5) framework with a thin model layer. Includes an ActiveRecord class for database agnostic (mostly) data retrieval. Good community support in its forums. Further development available via GitHub: https://github .

Free Open Source Mac OS X Windows Linux Self-Hosted

Laravel

Laravel is a clean and classy PHP framework with minimal configuration and expressive syntax. RESTful routing; ORM; beautiful code.

Free Open Source Mac OS X Windows Linux Web Self-Hosted

CUBA.platform

A Full Stack Enterprise Java Framework with lots of out of the box functionality and amazing tooling to manage the project.

Free Open Source Mac OS X Windows Linux

Ruby on Rails

Ruby on Rails is an open source full-stack web application framework for the Ruby programming language.

Free Open Source Mac OS X Windows Linux Ruby

Symfony

Symfony is a set of reusable PHP components and a PHP framework for web projects.

Free Open Source Mac OS X Windows Linux Web PHP

Agile Toolkit

Agile Toolkit is a PHP framework for developing Web User Interfaces. Inspired by desktop GUI it provides a full object-oriented foundation for Business and Presentation logic of your web software.

Free Open Source Mac OS X Windows Linux Web

Zend Framework

Extending the art & spirit of PHP, Zend Framework is based on simplicity, object-oriented best practices, corporate friendly licensing, and a rigorously tested agile codebase.

Free Open Source Mac OS X Windows Linux Web

web2py

Web2py is an open source web application framework. Web2py is written in the Python language and is programmable in Python.

Free Open Source Mac OS X Windows Linux Self-Hosted Python

Flask

Flask is a lightweight web application framework written in Python and based on the Werkzeug WSGI toolkit and Jinja2 template engine.

Free Open Source Mac OS X Windows Linux Web Python

Play!

Play is a web application framework, written in Scala and Java, which follows the model–view–controller (MVC) architectural pattern. The Play framework makes it easier to build web applications with Java & Scala.

Free Open Source Mac OS X Windows Linux

Xataface

Xataface is a flexible and shapable skin that sits on top of MySQL, making it accessible to every-day users.

Free Open Source Web

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.

Free Open Source Mac OS X Windows Linux Web Python

Willer Framework

Willer is a PHP framework, highlighting the features of ORM, MVC, and Bundle.

Free Open Source Mac OS X Windows Linux

ViUR.is

ViUR – the Information System for the Google App Engine™ plattform – is a »sandbox« for designers and developers. With the help of ViUR you can easy build web...

Free Open Source Mac OS X Windows Linux Self-Hosted

Pedestal

Pedestal is a web application framework written in Clojure that aims to bring both the language and its principles to client and server-side development.

Free Open Source Mac OS X Linux

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...

Free Open Source Mac OS X Windows Linux Python

bitcore

A pure and powerful JavaScript Bitcoin library or blockchain library.

Free Open Source Windows Linux Mac JavaScript

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...

Free Open Source Mac OS X Windows Linux Web

Bitweaver

Bitweaver is a free and open source web application framework and content management system. Its speed and power are ideal for large-scale community websites and...

Free Open Source Mac OS X Windows Linux BSD Web