Simply HorsesWebsite: https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/wip-mods/1440342-1-5-1-1-5-2-simply-horses-mod-alpha-0-6-2
Simply Horses opens the player to a new mode of play, both advantageous and detrimental. With this mod, one can catch his own horse, break it, and use it in one of three ways- to race around the world and push the borders of their domain, to trample over enemies, or to make day-to-day work and travel a bit more doable. There are also new tools to help you, from simple storage carts to homely wagons.
For Minecraft 1.5.1