American Horse Shows Association - ASHA is the national Olympics and world championship governing body for equestrian sports in the United States (combined, driving, dressage, endurance, show jumping, eventing and vaulting), publications, clinics, competitive events
Backcountry Horsemen of California - nonprofit organization dedicated to conservative use of backcountry trails, links, education materials, membership events, etc.
Dressage Unlimited- Your Dressage Community! From Beginner to Olympic Judge ....and everyone in between. Learn, teach, participate or just lurk.
Equine Directory- horses for sale or lease, boarding, trainers and instructors, supplies, tack and equipment
Harness Horse Youth Foundation- focuses on interesting and educating young people about horse racing, school and college directory, scholarships, racing information, horse camps,