EMIT, electronic punching and timing system
This system is the punching system currently in most widespread use.

International Control Descriptions for Orienteering
An interactive quiz for learning or reviewing the international control descriptions (IOF symbols).

IOF Technical Articles
Technical articles published by the High Tech Group of the International Orienteering Federation

MapStudio
Software for drawing orienteering maps with Adobe Illustrator.

OCAD Home Page
OCAD is software for map making.

Orienteering Interface Standards Project
The homepage of an important effort to make open standards for everything in orienteering hardware and software systems, including timing and punching systems, event administration software, position monitoring systems, speaker software, and course setting software.

Orienteering Simulation Games
A review of several free orienteering computer simulations with links to where you can download them.

Sport Ident - An Electronic Punch for Orienteering
A system approved by the International Orienteering Federation.

VirtualOri
Orienteering Game for windows. Good Gameplay, suites for contour training, and its free.