Miraheze - Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains...
wikiHow - wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual.
Fandom - The entertainment site where fans come first.
Blurtit - Blurtit is a Q&A website. You can ask a question or answer on any question.
MyWikis - A premium wiki host with top-class quality, excellent support, and VisualEditor (a WYSIWYG...
Ask Me Help Desk - Ask Me Help Desk is a question-and-answer site.