Okay, so earlier today, i tried installing the rei's minimap mod into my mods folder, (i use the vanilla/forge launcher because of computer problems) and i wasn't allowed to connect because i had it. what minimap mods are allowed? or maybe, can we add rei's to the list of usable mods?
Journey Map (which I recommend) and Voxel map are the two included in the launcher, so I imagine they are allowed.