R.E.F.E.R.E.E. Program
Bringing referee evaluation for establishing responsibility, education and effectiveness to soccer.

Reference Point System
An optical system developed in Norway which makes judging offside easier. Diagrams, reports, testing, and contact details.

J.A.S.O.A. Soccer Referee site
The overseas branch of the US Soccer federation referees in Yokosuka Japan.

The Last Word
This site is visited by referees from around the world. The forum is especially popular, with discussions on a variety of topics going on all the time.

Refex
International referee exchange for tournaments organized by Michael Wachowiak (Denmark).