For those unfamiliar with github, click on the releases tab above the file list and download HealComm.zip. You can also click the green download button, but that is not guarenteed to be a stable version.
This is an implementation of the HealComm library to work with Blizzard's unit frames in Classic WoW
Original work by the creator of Luna Unit Frames. https://github.com/Aviana/LunaUnitFrames