Ylmf OS is a free software Linux distribution derived from the Ubuntu operating system. Its user interface closely resembles that of Microsoft Windows XP. The distribution was originally not available in the English language, though shortly after the initial release in late 2009 an English language version of Ylmf OS was released.
Despite the very similar likeness to Windows XP’s Luna theme—the default theme for Windows XP—Microsoft does not appear to be planning to take any sort of action against the operating system or its developers.
Coming soon Ylmf OS 4.0! Ylmf OS 4.0 is not exactly a look-alike to Windows Vista, but looks similar.
Visit Ylmf OS Download Page Here
Visit Ylmf OS Homepage Here
Freeware and Open-Source Operating System 