WowAce

Loudmouth

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

First Aid data for Ackis Recipe List.

A data broker display, that shows one block per plugin.

Better quest log and tracker

QuestAnnouncer

Add-on that shows in a unit tooltip window a number of killed mobs of the same kind

Keeps track of your reagents for buffing.

GemCensus inspects people and records which gems they have socketed. Then displays which gems are the most popular.

Cartographer_Herbalism

NBuffBars

Allows tradeskill usage by clicking items or reagents.

Set the clicking action for Grid buttons

Database of Diminishing return categories and general data

Reduces interface tedium by doing the little things for you.

Search, filter and craft gems in the game!

Mutt (Macro Update Target Tool) provides slash-commands that can patch the predefined targets in your macros.

Role playing AddOn that shows extra information about characters as entered by the player.

Adds manabars to the sides of Grid frames.

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