WowAce

Visualises healing.

Smooth combat HUD based on ArcHUD2

Show item durability and quality in the character frame.

Serenity skins for Masque.

Smart mount randomization on a button! Empty coconut halves not included.

Queing of /who and SendWho() queries and a much better interface (see docs), with gurantee to be executed & callback.

Target Debuff monitor. Stacking aware, giving current and potential debuff status.

Reduces interface tedium by doing the little things for you.

Remember locations that city guards direct you to for HandyNotes

DaHud

FuBar_BattlegroundFu

Displays the remaing cooldown of the action you tried to use

Dynamic item DKP calculation

Keeps track of your top hits, heals, criticals, etc.

Smart raid loot and DKP tracker with automated standby and learning

A replacement tradeskill window

CraftList2

IncomingHealsLib

CombatLog in SimpleCombatlog style

Displays Pet Info for Hunters and Warlocks. Also keeps track of Stables and Pet and Demon skills.