Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
Wikiwand - A beautiful new interface to Wikipedia
PCGamingWiki - PCGamingWiki aims to list fixes and workarounds for every single PC game
Wikiverse - An interactive galaxy of Wikipedia knowledge ✨
Miraheze - Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains...
Oppia - Oppia is a free, open-source learning platform.