I have listed down the best wiki engines.
Mediawiki (Wikipedia) -- End Users/Desktop, Education
Tikiwiki -- Needing not just a robust wiki, but a full-featured CMS/Groupware with a bug tracker, discussion forums, blogs, etc.
DokuWiki -- Private, small to medium companies
Foswiki -- Enterprise, Corporate, Business, Intranets, Personal use, Community building, Educational, Intranet, Extranet
BananaDance -- Users,Buidling entire websites,Building product manuals,building community websites, and of course building anything needing a wiki! I just compared above wiki engines using wikimatrix.org click here to compare. Wikipedia provides a list of wiki engine Wikipedia list. To compare all the wiki's available, use this website Wikimatrix
