Some web frameworks of sorts:
- Cappucino (Objective J & Javascript)
- Cake (Php)
- Symfony (Php)
- Zope (Python) application server with api
- Flex (MXML & Actionscript 3)
- Pear (for php elements)
- Django (Python)
- Ruby on Rails
- Pylons
- Web2py (python)
- Cherrypy
- TurboGears
Good info here: