Cherrypy.org offers object-oriented HTTP framework in Python, with flexible configuration and extension, including code, documentation, FAQ, wiki, news, a tutorial, downloading and more for the web developers.

Twistedmatrix.com offers open source event-driven Python networking engine.

Django offers Python web development framework specializing in clean design and rapid development with documentation, downloading, tutorials, installation guide, templates, and data models for the web developers.

Pylons offers python rapid web application, development framework frequently compared to rails.

PHPOpenBiz offers open source PHP application framework for building data centric business applications with nice, clean code.

Xaraya offers open source PHP web application framework with infrastructure and tools to create custom web applications. Xaraya also provides modular, database, tools for the web developers.

Zoopframework.com offers oriented framework for PHP for the web programmer, including ajax and validation. Zoop also provides PHP implementation of .NET controls called GUIControls.