I'm here to present you my new mod called FindTheMobs. The idea is simple - to detect mobs (or players, of course) around you and show them on a radar. I sometimes need a simple tool like this and couldn't find any available for new versions of the game, so I made one myself.
The mod works fine with all mobs - whether they come with vanilla minecraft or not (that means mobs from other mods are detected as well).
Mod reads mobs the first time you launch the game and join any world and adds all of them to the list, where you can select specific mobs to be detected.
Radar is also customizable - you can change it's position, size, zoom, scale of icons and indicators, color, and the height difference it should notify about (when a mob's Y coord is different from yours by selected amount (default 6), an indicator will appear on the radar next to mob's icon showing whether it's above, or below you).
You can enter radar's settings by pressing R button (you can change this in settings, of course).
Mod works both in single and multiplayer mode.
Yes, I know that some mob icons (especially modded ones) are buggy.
One more thing you need to know is that I am not going to improve this mod. It's both a tool I needed and a thing I made for training, and these facts obviously state that it is not a mod I am going to work on.
The mod is available for Minecraft 1.10.2 and 1.11/1.11.2.