Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.

Help desk – Ask questions about using or editing Wikipedia. Reference desk – Ask research questions about encyclopedic topics. Content portals – A unique way to navigate the …

Wikipedia [c] is a free-content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki.

The English Wikipedia is the primary [a] English-language edition of Wikipedia, an online encyclopedia. It was created by Jimmy Wales and Larry Sanger on 15 January 2001, as …

Wikipedia is a free encyclopedia website in 344 languages of the world in which 331 languages are currently active and 13 are closed. People can freely use it, share it, and change it, without …

Browse Wikipedia's category pages, which index articles by subject. Category:Main topic classifications – Arts, History, Technology, and more; Wikipedia:Contents/Categories – Hand …

You can do a multi-lingual Wikipedia search using Google Advanced Search or entering site:wikipedia.org in the Google search box. Lumrix: AJAX driven Wikipedia search engine . …