Wikisource is an online library of free content publications, collected and maintained by the Wikisource community. Wikisource currently has 324,213 texts in the English language library.
Wikiversity is a community effort to learn and facilitate others' learning. You can use Wikiversity to find information or ask questions about a subject you need to find out more about. Or share your knowledge about a subject and build learning materials around that knowledge.
Wikimedia Commons is a media file repository making available public domain and freely-licensed educational media content (images, sound and video clips) to everyone, in their own language
Wikiquote is a free online compendium of sourced quotations from notable people and creative works in every language, translations of non-English quotes, and links to Wikipedia for further information
Wikibooks is a project for collaboratively writing open-content textbooks. These books can be textbooks, annotated texts, instructional guides, and manuals.
Wikidata is a free linked database that can be read and edited by both humans and machines. Wikidata acts as central storage for the structured data of its Wikimedia sister projects including Wikipedia, Wikivoyage, Wikisource, and others