WowAce

Creates a broker plugin for all your broker launchers

Ironi's Encounter Event Tracker

PoisonMenu

Client for MagicDKP which handles standby calls and bidding on items.

QuestAnnouncer

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

Toggles player names.

SmartyCatManaBar

EasyTrack

ClassColors

FuBar_RaidBuffFu

DarkCandy

Shared handling of media data (fonts, sounds, textures, ...) between addons.

Splut

Announces Mage Spells in chat.

Automate Your GDKP Auctions, Bids, & Payouts

FruityLoots

Speeds up triggering actions such as items or spells by triggering them on key/mouse down rather than release

Displays an alert whenever you loot an item for the first time.

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