An online encyclopaedia, which crowd-sources authors to input content, edit and maintain editorial style. It is a non-profit organisation based in San Francisco and was founded by Jimmy Wales.
Shift to online
Wikipedia effectively marked the end to the Encyclopaedia Britannica series and Microsoft's Encarta, which was a CD based encyclopaedia, and even books on the periphery of the reference category, such as the venerable Who's Who series, mostly through attrition and as demand fell off in favour of online solutions such as Wikipedia.
Documentaries, videos and podcasts