WowAce

Open all your mail

In-game EPGP guild helper, supports standby, main/alt shared pools, minEP, offpecGP. Fixed price list with progress multiplier.

Checks your gear before bosses and yells at you if you're an idiot

View an image of your guild vault from anywhere.

Display aura information inside action buttons

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

Keeps track of performance of memory, latency, and framerate.

Highly-configurable shield / absorb tracker.

Tracks, transmits and displays the cooldowns of your raid.

A Collection of Automations and Interface Tweaks.

KoS-Management Tool

Provides quick access to information on your group and their equipment, enchant and gem choices.

Show what quests have changed

Adds your name to chat messages

PT3Browser

A replacement tradeskill window

Cartographer_Treasure

Keeps track of current money and all your characters on one realm.

Angry Raid Points

Antagonist