RedOS

Available
RedOS (2000)

The first version of RedOS, developed by Red Computer Enterprise. It's like to Windows 2000, but with their style

RedOS 2 (2002)

The Second version of Red OS

RedOS 3 (2003)

RedOS 3.5 (2005

The fourth version used to be a rebuilder of RedOS 4, which was a nightmare for users of fear of numbers of 4 and this OS is replacement by RedOS 3.5

RedOS 5 (2007)

Canceled Versions
RedOS 4 (planned 2005, but was replaced by RedOS 3.5

Controversies

 * RedOS 4 was replaced by RedOS 3.5:

This controversy does not apply to RedOS in general but is apply to RedOS 4, which was criticized for an absurdist reason (Due to fear of the number 4), this system has been withdrawn and replaced by RedOS 3.5, which is supposed to have the same functions as RedOS 4.