Apache Struts

Dev
Seam Framework - JBoss Seam
Play Framework
Play Framework - The High Velocity Web Framework For Java and Scala
Mojolicious - Perl real-time web framework
CakePHP - PHP Framework
CakePHP is an open-source web, rapid development framework that makes building web applications simpler, faster and require less code. It follows the model–view–controller (MVC) . Manual for beginners now available and links towards the last version.
Yii PHP Framework
Symfony - PHP framework for web
Symfony is a set of reusable PHP components and a PHP framework to build web applications, APIs, microservices and web services.
Kajona
Kajona - Open Source Content Management Framework, build on PHP and MySQL.
Emweb web toolkit
Emweb provides complete solutions for web-based user interfaces using our popular open source library Wt.
GWT
SproutCore
A framework for building fast, desktop caliber web applications.
Qooxdoo
Catalyst | Perl
Catalyst is the most popular agile Perl MVC web framework that encourages rapid development and clean design without getting in your way.
Fat-Free Framework for PHP
A powerful yet easy-to-use PHP micro-framework designed to help you build dynamic and robust web applications - fast!
CodeIgniter - Web Framework
Flask Documentation - Pallets
Jam.py Application Builder
Nx.dev
Nx is a smart and extensible build framework to help you architect, test, and build at any scale — integrating seamlessly with modern technologies and frameworks while providing a distributed graph-based task execution, computation caching, smart rebuilds of affected projects, powerful code generators, editor support, GitHub apps, and more.
jQuery QueryBuilder
ConTeXt Wiki
React Native
A framework for building native apps using React
Django framework
An OpenGL library
GLFW project home page.
MDX | markdown with JSX
MDX allows you to use JSX in your markdown content. You can import components, such as interactive charts or alerts, and embed them within your content. This makes writing long-form content with components a blast.
Video.js
Make your player yours with the internet's most popular open source video player framework
Vanilla JS
Meme of JS framework
Vanilla JS
Vanilla JS is a fast, lightweight, cross-platform framework for building incredible, powerful JavaScript applications.
Sails.js
Sails.js makes it easy to build custom, enterprise-grade Node.js apps. It is designed to resemble the MVC architecture from frameworks like Ruby on Rails, but with support for the more modern, data-oriented style of web app development. It's especially good for building realtime features like chat.
Hotwire.dev
Hotwire is an alternative approach to building modern web applications without using much JavaScript by sending HTML instead of JSON over the wire.