WowAce

A collection management library similar to .NET's System.Linq

Helper addon for the Zul'Drak daily "Troll Patrol: The Alchemist's Apprentice"

AvionComicMedia

LDB broker for group interrupts

Notifies the raid when someone is Dazed.

GlyphRecolor

Broker add-on for GemHelper

Will try to keep track of what a character did last time it was logged in

Shift-clicking on a user name in chat shows a tooltip with their whois information.

Auto sizes frame layout depending on group/raid size

Reports in raid chat whenever a raid member "fails." /EnsidiaFailsWotLK to configure.

A library which provide tools for detecting adverse effects on units.

TalentWhisper

Profession launcher objects for any Broker display

New/Old BG indicator, Join by ID, Quick Leave Queue, etc.

Spell interrupt aid and announcement addon.

BangItHarder

Adanced Achievement Tracker is a smal tool to track Achievements

Avion2

Add in keybindings to place raid marks on mouseover, or the target if there is no unit being moused over