How to create a knowledge base for IT topics?

Question

CMS

Recommend knowledge base CMS. I will listen to all suggestions.
Requirements:
1 free
2 built-in editor
3 code display modules, console type

Answer 1

dokuwiki, mediawiki Put a couple of
plug-ins for the code and a visual editor, and that's it.

Answer 2

And I'm using the local one - OutWiker

Answer 3

I use wiki. So far I'm satisfied, in my opinion the best solution for straight hands.
www.xwiki.org/xwiki/bin/view/Main

Answer 4

Wikipedia - semantic wiki engines
Semantic wiki
- it seems to me that the bourgeoisie has a lot of such projects