is a comedy manga serialized in ASCII Media Works' Weekly ASCII and Ubuntu Magazine Japan between May 2008 and June 2013. Its name is a play on words combining the Linux distribution Ubuntu and a Japanese onomatopoeia for a kiss, .
The story follows the activities of the three members of the Ichinomiya Prefectural High School's system administration club (part of the wider IT club). Each chapter is focused on a certain aspect of the Ubuntu operating system or a related topic, such as command-line interfaces, input methods, Linux Mint, or software licensing.
Besides print publication in ASCII Media Works' magazines, most of the manga's chapters are freely available online and released under a Creative Commons license. Furthermore, a tankà Âbon was published in 2012 containing the first eight chapters as well as two short extra stories.
Because of its release under a permissive license allowing use in derivative works, Ubunchu! has been translated to at least 17 different languages by fans.