WowAce

Shows a nice Soulstone Monitor.

Tells you the Tiller, what food they like, and if you have fed them today for the quests A Dish for ...

LibDogTag-2.0

Displays classes and specialisation dependent stat priorities provided by icy-veins.com

Keeps track of healing spells cast by everyone in a group.

ActionCombat

Spyglass

Protractor

Helps you decide which ability to use next according to priority you set

Auto roll greed, need, pass or manually roll on items.

OneCore is the centralized code shared between the OneBag Suite

Capsule

Provides database of quest giving npcs/mobs/objects for display on the World Map/Minimap

Filters AFK and DND messages after you've seen them once.

Disease Tracker for Death Knights.

Cartographer_NoteTarget

Piece of mind by being one with your class.

Keeps track of current money and all your characters on one realm.

Cryolysis

pDebuffList