Ubuntu Linux是一份完整的桌面Linux操作系统,它可免费获得,并带有社团及专业的支持。Ubuntu社团按照Ubuntu宣言里所铭记的思想而组建:软件应免费提供,软件工具应能以人们本地语种的形式可用且不牺牲任何功能,人们应拥有定制及改变他们软件的自由,这包括以任何他们认为适宜的方式。Ubuntu是一个古非洲语单词,意指对他人的博爱。Ubuntu Linux发行将这种博爱之心带到了软件的世界中。
Steve Langasek has announced the availability of the fifth alpha release of Ubuntu 90.4, also known as "Jaunty Jackalope": "Welcome to Jaunty Jackalope Alpha 5, which will in time become Ubuntu 9.04. New features in Jaunty: updated packages; X.Org server 1.6; font size optimization; new style for notifications and notification preferences - included in Jaunty is a simple menu which can be used to set preferences for notification icons, such as where they pop up on the taskbar; Linux kernel 2.6.28; ext4 file system support." Read the release announcement and release notes for further information and known issues. Download (MD5): jaunty-desktop-i386.iso (696MB, torrent), jaunty-desktop-amd64.iso (698MB, torrent). Other members of the Ubuntu family are also available in alpha 5; they include Kubuntu (download, release notes), Xubuntu (download), Ubuntu Studio (download) and Mythbuntu (download).