Australian Open | French Open | Open University | open source | U.S. Open | Wacken Open Air | The Open Championship | U.S. Open (tennis) | source code | All England Open Badminton Championships | U.S. Open (golf) | Open Source | Open-pit mining | 2006 Australian Open | Open Software Foundation | Indira Gandhi National Open University | Lamar Hunt U.S. Open Cup | 2005 Australian Open – Men's Singles | U.S. Women's Open | open access | Gerry Weber Open | Swedish Open | source | International GT Open | Federal Open Market Committee | 2014 Australian Open – Men's Singles | 2008 Australian Open – Men's Singles#Finals | WTA German Open | U.S. Open Polo Championship | U.S. Open Badminton Championships |
Among notable software designed and/or supervised by Spafford include the freeware Tripwire tool coded by his student Gene Kim (Spafford was later the chief external technical advisor to the Tripwire company during their first few years), and the freeware COPS tool coded by his student Dan Farmer.