Arse Race
   A variation where you bet on buttocks instead of horses. Includes a high score table.
   http://www.arserace.com/

Horse Capades
   Online simulation game where players own, train, breed, and show sim-horses.
   http://expage.com/petcapades/

StableKing
   Free online multi-player horse racing game. No knowledge of horse racing required. Suitable for players of all ages.
   http://www.stableking.com/

eDerby
   eDerby is a web-based game that allows up to 10 players per game to enjoy a fast-paced game of wagering on simulated horse-races.
   http://www.SurvivorSoft.com/