I'm using Heatsink to track the internal cooldowns of the proc trinkets but recently since the patch, heart of rage (heroic) has not showed up on the timer when it goes off. The libs\LibInternalCooldowns-1.0\Data.LUA has the right spell name so I'm not sure what the problem is. It's configured to show equipped items, internal cooldowns, and pvp timers
any ideas? Do you know of another addon that does a better job?
I would take a look at NeedToKnow @ Curse.
While it has to be set up manually, the information on those cooldowns can be often found on wowhead etc.
The video below shows how to set it up, and actually comes from a user who moved from heatsink to using NeedToKnow.