Simple Entity Tracker is exactly what it says on the tin. It will list the top ten chunks per world, by entity count. You can click on the links in chat to teleport to that location, and make entities in that chunk temporarily glow to help locate them.
I made this for a server I play, to help them find overcrowded mob farms, and figured some people might find it useful.
Command: /entitytracker (requires permission entitytracker.use)

Command: /entitytracker glow (makes mobs glow for ten seconds)

If you run into any issues or have any suggestions, feel free to join my support discord: here
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