GMMOS

GMMOS is a mockup username operating system by GMM with Version 1.0 released in 2019. GMM has made several changes to OS with 3 updates being posted.

History
Main article: History of GMMOS

Development started when SDON was released in the 890s. SDON then became Snickerdrumm which continued having updates all the way till 1950. The first build of GMMOS (till 0.99 comes) was exactly as final build of CTPOS 2.1.

There are 26 phases before releasing:
 * Launch Preview (1975)
 * 0.05 (1980)
 * 0.09 (1984)
 * 0.18 (1988)
 * 0.3 (1992)
 * 0.38 (1996)
 * 0.46 (2000)
 * Whistler (2001)
 * Terminal Server 1.0 (2001)
 * 0.57 (2004)
 * 0.58 (2005)
 * 0.6 (2005)
 * 0.65 (2007)
 * 0.7 (2009)
 * Pre-Alpha (2011)
 * 0.81 (2012)
 * All-Stars (2015)
 * Ten (2015)
 * 0.9 (2015)
 * Beta 4 (2017)
 * Final Beta (2018)
 * RC (2018)
 * 0.99 (2019)
 * RC 2 (2019)
 * Pre-Release (2019)
 * Release (2019)