Board Thread:General Discussion/@comment-5706908-20160211040838/@comment-168424-20170629010814

Wikispaces.com offers free hosting for educational wikis, but it is not MediaWiki-based, so you'll have to get used to a totally new system. It's probably more like Confluence (by the makers of the JIRA bug DB). Confluence has a nice WYSIWYG editor, but is far more limiting when it comes to customization compared to markup based wikis.

Fandom/Wikia appears to be the cream of the crop for free wiki hosts and they are so far above the competitors, it's almost a monopoly.