Four Linux providers promised to support a common version, and they got together at Comdex to launch UnitedLinux for servers. At the moment there are no plans for a desktop version. However, Lindows -- a desktop version of Linux that claims some level of compatibility with Microsoft Windows -- has also been released in version 3. It costs $129 (or $119 if you download it), which makes it two to three times more expensive than OEM versions of Windows.