Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
Encyclopædia Britannica - Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.
Daily Curiosity for iOS - The top 5 things to learn on Curiosity.com, delivered daily.
Kiwix - Kiwix enables you to have the whole Wikipedia at hand wherever you go!
Inquire by Tamper - The easiest way to discover the world around you.
Miraheze - Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains...