Well, the name says it all, it adds a Horse Armor Stand and just like with the classic armor stand in vanilla, you can display your favorite horse armor.
It should work with no problem with any mods, that add vanilla-looking (without fancy models) armor to the game.
If you like it — download it, and if you are happy with it, follow for more updates.
Well you see it's quite simple, you need to craft it like this:
Then you can use it just as a classic armor stand. How will you display your cool armors?