Miraheze - Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains...

Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.

Fandom - The entertainment site where fans come first.

Proteopedia - Education & Reference

Wikiful - Wikiful is an online platform that makes it easy to build and share a wiki.

Investopedia - Investopedia has a lot of information to share with business mind people.