Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
ZuluPad - ZuluPad is a notepad on crack.
Kiwix - Kiwix enables you to have the whole Wikipedia at hand wherever you go!
Book on a Stick - Write a book in one self-contained file that runs entirely in your browser and can be kept on...
Encyclopædia Britannica - Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.
wikidPad - wikidPad is an application for storing thoughts, ideas, todo lists, contacts, or anything else that user can think of to write down.