Ubuntu is a desktop-oriented Linux-based operating system, freely available with both community and professional support (Debian GNU/Linux). Ubuntu use only free software to provide an up-to-date yet stable operating system for the average user, and available to you free of charge. P.S.
Cory Doctorow [4]-- just switched from Mac to Ubuntu.
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Well Known Techies Switching from Mac to Ubuntu [5] (kairosnews)
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Switch to Ubuntu [6] (apress)
Ubuntu [7] is a free, open source operating system that starts with the breadth of Debian and adds regular releases (every six months), a clear focus on the user and usability (it should "Just Work", TM) and a commitment to security updates with 18 months of support for every release. Ubuntu ships with the latest Gnome release as well as a selection of server and desktop software that makes for a comfortable desktop experience off a single installation CD.
WIKI [8]
The following list covers some of the software components included as part of version 6.06 of the Ubuntu Desktop. Much of it (such as GIMP, OpenOffice.org and Firefox) is considered standard software for the free desktop (see Examples of Free Software).
* GNOME desktop environment and accessories
* Gedit text editor
* GIMP image editor
* Firefox web browser
* Gaim instant messenger
* Evolution email and personal information manager (PIM)
* OpenOffice.org office suite
* Synaptic software package manager
* Totem movie player
* Rhythmbox music player
Most other free software can be obtained from the package repositories through Synaptic or the simplified Add/Remove Programs utility.
Edubuntu [9] is a GNU/Linux distribution designed for use in classrooms, it's also Free in the sense of giving you rights of Software Freedom.
Edubuntu has been developed in collaboration with teachers and technologists in multiple nations worldwide. The primary goal of Edubuntu is for an educator with limited technical knowledge and skill to be able to set up a computer lab, or establish an on-line learning environment, in an hour or less, and then administer that environment without having to have much knowledge on the subject.
