[efadeev]

Askbot http://askbot.org is a very easy to install app - installation uses standard Python methods and there is even a configuration script that will help you deploy it (and all dependencies are satisfied automatically too).

In comparison, Askbot is faster than both Shapado and OSQA and can be with ease deployed along with other Django applications.

Of all open source Q&A forums as far as I know, Askbot is the only one to have any significant number of unit tests.

Like OSQA, Askbot is backed by a company, now based in Chile and this year it is supported by StartUp Chile business incubator!