One video says ore than many words:
Includes: wikis, blogs, news, rss feeds, relay chats, web pages,
surveys, assignments, versioning, media player, music/video streaming
server, group based memberships and access control, memberships
request/approval mechanism, Centralized Access Control.
KPAX is written in Python and requires web2py. From the web2py [site]
page you can install by typing the KPAX url:
http://mdp.cti.depaul.edu/appliances/default/download/app.source.221663266939.tar
Massimo