Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
ILIAS - For several of my clients in the health care domain, ILIAS turned out to be an excellent choice.
Kiwix - Kiwix enables you to have the whole Wikipedia at hand wherever you go!
Sakai - Historically, the community has aligned around a single project, the Sakai Collaboration and...
Encyclopædia Britannica - Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.
Open edX - Open edX is implemented mostly in Python (with some Ruby and NodeJS as well) and the code is being...