WowAce

FuBar_AlchemyFu

Display the global cooldown around your cursor. (+ other stuff)

Battleground Timers in a HUD around the Blizzard BG status

Group interrupt cooldown tracking.

Shows the minimum durability of equipped items on the stats frame.

Allows customisation of login/logout system messages.

Piece of mind by being one with your class.

Gathers statistics on certain chance-on-use spells, also known as procs.

Display bag usage on each of your bag slots.

ComboSounds

Provides information of tradeskill and crafting materials that are in the banks and bags of your characters.

SRA

Displays the zone level ranage of the zone you are in and also gives you a suggest zone and instances to be in.

Simple and rich Death Knight rune customizations

First Aid data for Ackis Recipe List.

Adds on-screen buttons for the farming tools and seeds.

CatPoints

Pet Theory

Simple language selection for Data Broker

Embeddable chat throttling library with traffic shaping and priorities