EMIT, electronic punching and timing system
This system is the punching system currently in most widespread use.
http://www.emit.no/

International Control Descriptions for Orienteering
An interactive quiz for learning or reviewing the international control descriptions (IOF symbols).
http://www.fortnet.org/icd/

Orienteering Simulation Games
A review of several free orienteering computer simulations with links to where you can download them.
http://www.geocities.com/haywoodkb/o-game.html

MapStudio
Software for drawing orienteering maps with Adobe Illustrator.
http://www.mapstudio.info/mapstudio/

Sport Ident - An Electronic Punch for Orienteering
A system approved by the International Orienteering Federation.
http://www.sportident.se/english/Orientering.aspx

IOF How to Secure Fair Timekeeping
Technical article published by the International Orienteering Federation.
http://www.orienteering.org/i3/index.php?/iof2006/media/files/fair_timekeeping__1