List of Common OSs

Mac

• OS 9: October 1999. Last update 9.2.2 in December 2001.
• OS X 10.0 (Cheetah): March 2001.
• OS X 10.1 (Puma): September 2001.
• OS X 10.2 (Jaguar): August 2002.
• OS X 10.3 (Panther): October 2003.
• OS X 10.4 (Tiger): April 2005.
• OS X 10.5 (Leopard): October 2007.
• OS X 10.6 (Snow Leopard): August 2009.
• OS X 10.7 (Lion): July 2011.
• OS X 10.8 (Mountain Lion): Preview. Projected release- July 2012.

Windows

• 98: May 1998.
• 2000: February 2000.
• XP: October 2001.
• Vista: January 2007.
• 7: October 2009.
• 8: Preview May 2012.

Linux

• Ubuntu
  • 9.04 (Jaunty Jackalope): April 2009
  • 9.10 (Karmic Koala): October 2009
  • 10.04 LTS (Lucid Lynx): April 2010
  • 10.10 (Maverick Meerkat): October 2010
  • 11.04 (Natty Narwhal): April 2011
  • 11.10 (Oneiric Ocelot): October 2011
  • 12.04 LTS (Precise Pangolin): April 2012 - (Arrakis & labs)
  • 12.10 (Quantal Quetzal): October 2012
• Gentoo
• Debian
• Knoppix