Wikibase

Wikibase is the software that runs Wikidata. Wikibase allows the collaborative editing of structured data on top of MediaWiki. It is optimized for graph-like, schema-poor data, not for tabular and strongly pre-structured data. Wikibase is an open source project, and everyone is welcome to join in development. 

''Found errors or omissions? Most pages on this site can be edited like in any wiki. You are welcome to contribute here.''