Gel Boomerangs - Tuning and throwing instructions, tips on corrective measures for accuracy problems, and an explanation of events from this retired manufacturer. - http://www.gel-boomerang.com/
Boomerang Passion - Includes design plans with descriptions and pictures, decoration ideas, FAQ, photos, and related links. - http://www.boomerangpassion.com/english.php
MX Boomerangs - Provides instructions on throwing, types and how they are made, and information on subscribing to the rang email list. - http://www.boomerangs.org/
Long Distance Boomerangs - News, bulletin board, tournament results, and instructions; dedicated exclusively to long-distance throwing. - http://www.baggressive.com/