WikimediaOS

WikimediaOS (Previously known as WikipediaOS until 2003) is the official operating system of the Wikimedia Foundation.

2001
In February 2001, some Wikipedia editors started an unofficial project to port UseModWiki (The wiki engine that Wikipedia used back then) and Wikipedia to an operating system, adding features for common use and a desktop enviroment/user interface.

Versions 0.1-0.4
WikipediaOS 0.1

WikipediaOS 0.2

WikipediaOS 0.3

WikipediaOS 0.4

Versions 0.5-0.8
WikipediaOS 0.5

WikipediaOS 0.6

WikipediaOS 0.7

WikipediaOS 0.8

Version 1.0-??
WikimediaOS 1.0

WikimediaOS 1.1

WikimediaOS 1.2

TBA