This system is the punching system currently in most widespread use.

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

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

Software for drawing orienteering maps with Adobe Illustrator.

OCAD is software for map making.

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.

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

A system approved by the International Orienteering Federation.

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