Wikiwand - A beautiful new interface to Wikipedia
Six Degrees of Wikipedia - Find the shortest path between two subjects
Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
Intch - Professional networking app
Miraheze - Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains...
Google Cloud Search - Search across all your company's content in G Suite.