WowAce

LD50_abar

Warns you with sounds when you gain different shaman spells.

Uses guild notes to add alts' main names to chat windows and other places

SinkLib

Lists Pots and Herbs you got on all chars and allows you to specify color coding

EyeCandy

Keeps track of honor, PvP statistics, BG Marks, and Arena points.

Paparazzi

Provides information about the player's bodyguard.

MessageEvent

Check the quality of wild battle pets

Data broker for keeping track of your Ankh cooldown.

Merchant, gossip and taxi tweaking module for TweakHub.

Lexan

GPriceEach

Add-on that shows which battle pets can be farmed this week

TextSpy

opens/closes all bags when at merchant (instead of only the backpack)

SysMon plugin for any DataBroker display.

An extra set of 11x3 buttons, integrated into the default action bar.