WowAce

PricePer

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

NielasAran

Show an in combat indicator

Keeps an eye on someone's distance from you, and alerts you if they get too far.

Menagerie

Add-on that shows in a unit tooltip window a number of killed mobs of the same kind

A Data Broker add-on for quickly switching your specialization with gear set and loot specialization.

Library to help with querying unit talents.

A system config addon to WOW

TweakHub module to automate various activities such as accepting resurects, invites, and other game dialogs, ignoring duels a...

Chat frame tweaking module for TweakHub.

AllYouCanEat shows information about the following statistics: beverages, foods, bandage types, potions, elixirs and flasks.

Powerleveling guide framework

Library to provide non-explicit cooldown tracking and callbacks.

Helps with interrupt notifications and announcements.

Displays oRA3 main tanks.

Test whether the player can really dispell a buff or debuff, given its talents.

Suppress chat messages when specified items are looted

Keeps track of time played and rested XP across your characters.