OSQA is the free, open source Q&A system, OSQA site is more than just an FAQ page, it is a full-featured Q&A community. Users earn points which are called “karma points” and badges for useful participation, and everyone in the community wins. Users can ask and answer questions, comment and vote for the questions of others and their answers. Both questions and answers can be revised and improved. Questions can be tagged with the relevant keywords.
OSQA is written in Python and powered by the Django application framework. It is can be downloaded from http://wiki.osqa.net/display/docs/Downloading+OSQA a. It is under GNU General Public License.