This stand-alone addon allows you to set mount favorites the same way you do battle pet favorites: right-click the mount in the mount journal and Set or Remove Favorite status.
The behavior of this addon is now in the default mount journal. This addon is no longer needed.
If you use the addon Select, then this addon also adds these filters for selecting your favorite mounts:
/select mount:favorite to select any favorite mount
/select mount:fflyyer to select favorite mounts that can fly
/select mount:fland to select favorite land mounts