If you've ever created a WSGI application without a framework of an request handler you know how hard this can be.
For the full feature list have a look at the Features page.
Colubrid should be compatible with Python 2.2. If you find a line of code that doesn't work with 2.2, please submit a bug.
You can fetch the most recent version of Colubrid on the Download page.
If you're using easy_install you can fetch the egg by using this command:
Colubrid is not a framework :-) Although some people like the idea of having found a framework in Colubrid. All Colubrid does for you is parsing form data, URL parameters and cookies and providing an URL dispatcher.
Colubrid users can post on the Colubrid Google Group.
There is also a small wiki with code snippets in the Trac.