WowAce

Add-on that allows you to setup and quickly switch between different profiles of your action bars

Addon to switch all your AceDB profiles via slash command. This tool also allows you to emulate profiles for non AceDB addons.

A library to provide a clean dropdown menu interface.

Check the consumable usage of your raid

Shows class colors on player nameplates and names

tracks and share quests between your party

An auction house AddOn to make the life of each fence easier.

Keeps track of HoTs, DoTs, Buffs and Cooldowns. With audio and text alerts to refresh them.

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

RootsBidder

Keeps account of attendance and loot for raids, parties, bgs, arenas and solo for questing.

TabletLib

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

Adds a button to undress the model in the Dressing room.

Reorients the camera to be behind the character after a charge.

Automates bites during the Blood-Queen Lana'thel encounter in Icecrown Citadel

Keeps track of durability and pops up a dialog to repair when you go to a vendor who can.

Helps you automate selling stuff

Shows skills in a tooltip and allows them to be used.

TuiRaidTracker