As seen in the movie Aliens. Displays the location of nearby mobs (configurable for hostile, neutral, player, or any combo thereof). Press M to bring up the menu for options.
Made some changes to make it compatible with Zan’s Minimap, which I have continued maintaining. Simply install them both in any order. They share one class file but the shared classfile will work with either map and tracker, both, or neither, so just overwrite it and don’t worry about it. If this is too confusing I can upload a version with both in one package.
Art by Darth Biomech. Menu code from Zan’s minimap (m to open menu).