Fandom - The entertainment site where fans come first.
Wiki on a Stick - Self-contained desktop wiki
Miraheze - Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains...
Woas - Complete wiki in a single HTML file, forked from Wiki on a Stick.
Wikiful - Wikiful is an online platform that makes it easy to build and share a wiki.
TiddlyWiki - a non-linear personal web notebook