Wiktionary Dictionary and thesaurus |
Wikispecies Directory of species |
Wikiversity Free learning materials and activities |
Commons Free media repository |
Wikiquote Collection of quotations |
Wikibooks Free textbooks and manuals |
Wikidata Free knowledge base |
MediaWiki Wiki software development |
Meta-Wiki Wikimedia project coordination |
Wikisource Free-content library |
Wikivoyage Free travel guide |
Wikinews Free-content news |