From Rawr Team :
Rawr is a program for comparing and exploring gear for Bears, Cats, Moonkin, Healadins, Retadins, Mages, DPS Warriors, Protection Warriors, Trees, Hunters, Protection Paladins, Healing Priests, Shadow Priests, Enhancement Shamans, Warlocks, Rogues, Restoration Shamans, Elementals, and DPS and Tank Death Knights, in the MMORPG World of Warcraft. Rawr has been designed from the start to be fun to use and helpful in finding better combinations of gear and what gear to obtain.
Features include a user-friendly interface; the ability to load your character from the Armory, automatically download info about items it doesn’t know about, download info about possible upgrades, and download info about specific items you tell it to, ensure that you won’t need to type in any item stats with Rawr; the most comprehensive, and most accurate system for calculating your character stats, and ratings for individual items, based on your current gear, enchants, and buffs.
Operating system: Windows XP/Vista/7