Django is a free and open-source web framework, written in Python, which follows the model-view-template (MVT) architectural pattern.

Materialize is a modern responsive CSS framework.

WaveMaker Platform is a platform for rapid application development for web & mobile apps.

Portofino is a web application framework for Java and Groovy developers. Its purpose is to help developers create outstanding enterprise applications.

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