Revolution OS was created in 2001.
Wombat OS was created in 2004.
Os Sete was created in 1999.
REX OS was created in 1999.
Os Lusíadas was created in 1580.
Joli OS was created in 2008.
Os TF was created in 1905.
Online OS was created in 2005.
Palm OS was created in 1996.
Os Fuzis was created in 1964.
Os Trapalhões was created in 1977.
Wizards of OS was created in 1999.
Os Faroleiros was created in 1920.