I'm sorta-kinda working on something for cMUD, and BuNutzCola seemed to be working on something for zMUD before as he posted on the forum. Here is what I have thus far:

Features:
- Shows HP in a red gauge, stun in an orange gauge, stamina in a green gauge and mana in a blue gauge
- Shows numerical values as well as a graphical representation of points remaining
- Shows time, accent, language, armed status, speed, position and mood
- Shows a timer showing how long you have been on if you want to get rid of the default status bar to make room for this
- Gags the text prompt, so that everything is neatly displayed at the bottom
- Customizable - you can disable the mana gauge, for example, if you don't want to see it on your mundane PC, and you can change the order of the other pieces
It is pretty light at the moment, and I might add more stuff, but when I'm ready to release something I will.

Spending the last bits of time off from school to learn some zScript, yay.
Agent's infobar works wonderfully though, and it kind of inspired me to work on this.

I'll make a new thread for it when I'm happy with it.
Edit: Oh and the code for cMUD and zMUD are roughly similar, so it's possible this will be backwards-compatible.