Peer 2 Peer University (we mostly just say P2PU) is a grassroots open education project that organizes learning outside of institutional walls and gives learners recognition for their achievements. P2PU creates a model for lifelong learning alongside traditional formal higher education. Leveraging the internet and educational materials openly available online, P2PU enables high-quality low-cost education opportunities.Learning for the people, by the people. About almost anything.

OpenTutorial is a place where you can find Tutorials about everything by anyone, a huge "How to" repository, an Open Source, Wiki tutorial site in the style of Wikipedia

Open Library is an open, editable library catalog, building towards a web page for every book ever published. MoreJust like Wikipedia, you can contribute new information or corrections to the catalog. You can browse by subject, author or lists members have created. If you love books, why not help build a library?

Moodle is a course management system (CMS) - a free, Open Source software package designed using sound pedagogical principles, to help educators create effective online learning communities.