Wombat OS was created in 2004.
Diary of a Wombat was created in 2002.
Common wombat was created in 1800.
Southern hairy-nosed wombat was created in 1845.
Northern hairy-nosed wombat was created in 1873.
Os Mutantes was created in 1966.
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.