Hola. Decided to make a maptools framework for Fax's MechCombat homebrew. As of this posting it's still extremely basic but the basic functionality is there.
You can create and use a deck, and there are properties for Mech tokens with HP for the five major parts, heat, and power as well as bars to give a quick-view of those values when you mouse over the token.
A sample mech is included in the campaign file provided with macros for taking damage to individual parts and gaining heat. These automatically update the bars as well, and there's a neat little effect for heat.
Maptools can be found here. b76 or higher required. Designed on b76 so I cant speak for stability on higher versions as they come out.