Equiworld.net
One of the finest equestrian horse directories with tips on horse care, products and other services.

HayNet
A comprehensive directory of horse-related sites

Equerry
Information and news, quality services and products for the management of horses as well as breeding, care, training, showing and sales.

Horse-riding.net
Horseback riding stables and riding vacations directory

Horsetravels
Website specialized in offering many horse riding vacations and related services. Specialized in the USA but with a wide scope.

Sports resources
directory of Sports related websites.

Travigator
Extensive directory with lots of travel related information and quite a few interesting horse riding holidays as well.