WowAce

HealPoints is a healer benchmark addon similar to TankPoints for tanks. It is designed to make it easier for healers to choose the most optimal gear, for example balancing spirit, +mana/5s, +healing and intelligence.

It displays all your relevant basic stats as well as HP/sec, HP/mana etc. for all your healing spells. It also displays a few more advanced benchmarks: PowerPoints (focused on healing output over a short period) and EndurancePoints (focused on healing output over a long period). HealPoints detects and supports all relevant talents and almost all set and equip bonuses.

HealPoints contains a calculator that lets you manipulate the basic stats and see how they affect your spells and overall healing efficiency. See the supplied Readme.txt for more details.