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

Qikipedia - Instant Wikipedia summary cards on any web page

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

Newsit - Find the discussion around the page you're looking at!

Fandom - The entertainment site where fans come first.

Anycomplete - The magic of Google Autocomplete while you're typing