Aquarium

Aquarium is a Web application framework, written in Python. It provides an approach to producing a Web application without duplication of effort by reducing the amount of code you need to write. It offers convenient libraries and extensible APIs for items such as session management and Web server integration (including CGI, mod_python, FastCGI, or its own Web server, Glass). It provides tight integration with Cheetah, including autocompilation of Cheetah templates. Last of all, it offers a convenient approach to Web development. As a developer, you just "plug in" modules; Aquarium ties them all together.

Aquarium's features were inspired by a broad range of Web technologies such as PHP's FreeTrade, Java's Struts, Perl's Mason, and Python's Zope. It is Open Source software, available under a BSD-style license. Aquarium is compact--just a few thousand lines of code--and extremely well documented. It's a useful tool for creating any highly-dynamic, custom Web application written in Python.

http://aquarium.sourceforge.net