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。

        Ubuntu 承诺:
Ubuntu 将永远免费, 包括企业版和安全升级.
Ubuntu 将由 Canonical公司 以及全球数百个公司来提供商业支持.
Ubuntu 包含了由自由软件团体提供的最佳翻译和人性化架构.
Ubuntu 光盘仅仅包含了自由软件; 我们鼓励您使用自由和开放源码的软件, 改善和传播它.

        Steve Langasek has announced the availability of the sixth and final alpha release of Ubuntu 9.04: "Welcome to Jaunty Jackalope Alpha 6, which will in time become Ubuntu 9.04." Not much information is available on this release; in fact, both the release announcement and release notes are almost exactly the same as for alpha 5. The only difference is the number of known issues - with alpha 6, two of the seven known issues have been resolved, including the bug where the installer fails to tell the kernel to reload the partition table during partitioning and the OEM configuration failure. But the "encrypted home directory" feature in the installer is still disabled and the new X.Org Server 1.6 still doesn't support the proprietary ATI driver. If you are still interested in testing the new release, download (MD5) the live CD images from here: jaunty-desktop-i386.iso (698MB, torrent), jaunty-desktop-amd64.iso (693MB, torrent). The other members of the Ubuntu family have also entered alpha 6: Kubuntu (release notes, download), Xubuntu (download), Ubuntu Studio (download) and Mythbuntu (download).

        另外的两个Ubuntu发行版：
面向Xce桌面环境的xubuntu - http://www.xubuntu.org
面向教育机构的Edubuntu - http://www.edubuntu.org（责任编辑：A6）