Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. It is distributed as a single file module and has no dependencies other than the Python Standard Lib...
Tornado is a scalable, non-blocking web server and web application framework. It was developed for use by FriendFeed, which was acquired by Facebook in 2009 and Tornado was open-...
web.py is a web framework for Python that is as simple as it is powerful. web.py is in the public domain; you can use it for whatever purpose with absolutely no restrictions.