Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
Fandom - The entertainment site where fans come first.
Linkpack - Save, read and share your links
Miraheze - Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains...
Pocket - When you find something you want to view later, put it in Pocket.
Wikiful - Wikiful is an online platform that makes it easy to build and share a wiki.