StartOS (formerly Ylmf OS) is a discontinued Chinese Linux distribution. StartOS is an operating system which is free and open-source software. In the beginning it was based on Ubuntu,[4] but starting from version 4.0 it adopted custom package management (called YPK) and system installer, though the underlying live medium is still built using Ubuntu's Casper tool.[5][6] Its user interface closely resembles that of Microsoft Windows XP.[7] The distribution was originally not available in the English language, though shortly after the initial release in late 2009[8] an English-language version of Ylmf OS was released.[9]

New-StartOS Logo.png
StartOS 5.0
OS familyUnix-like
Working stateDiscontinued[1]
Source modelOpen source
Latest release6.0 (beta) [2] / 4 July 2013; 7 years ago (2013-07-04)
Latest preview6.0 beta[3] / 27 March 2012; 9 years ago (2012-03-27)
Available inChinese and English
Package managerSelf-made YKPG
Kernel typeMonolithic (Linux)
Default user interfaceGNOME

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.[7][10]

Ylmf OS 4.0 looks similar to Windows Vista, but also has a Mac OS X cursor scheme.



See alsoEdit


  1. ^ "StartOS". Retrieved 9 July 2020. CS1 maint: discouraged parameter (link)
  2. ^ YLMF Website (in Chinese)
  3. ^ YLMF Forum
  4. ^ 「Ylmf OS - YlmF Operating System」. Retrieved 2010-01-20.
  5. ^ StartOS at StartOS. Retrieved 2012-12-13.
  6. ^ 「Ylmf OS looks so much like XP! - Ubuntu masquerading as XP」. Retrieved 2010-01-20.
  7. ^ 「Infamous Chinese pirates launch Ubuntu that looks just like Windows XP」. Retrieved 2010-01-20.
  8. ^ 「Ylmf OS now available in English」. Retrieved 2010-01-20.

External linksEdit

  Media related to StartOS at Wikimedia Commons