WowAce

Checks Raid Buffs/Flasks/Consumables. Tunable alerts for misdirects, taunts, cc breakage, rez, dispel and interrupt

Collectinator is an addon which will scan your pets and mounts and provide information on how to obtain them.

The core module for RW

Reports on a configurable dashboard or to group chat on consumables, buffs, AFK, mana and many many others but in an intellig...

Calculates and shows your TankPoints in the PaperDall Frame.

Automatically turns on the combat log for selected instances

Remember locations that city guards direct you to for HandyNotes

A replacement tradeskill window

A lightweight, flexible, multi-target threat meter.

A friendly companion that remembers the chat.

XP bar using Ace3.

Serenity skins for Masque.

Tooltip of awesomeness. Moo. It'll graze your pasture.

Try on different gear and see their total stats and their differences. In short, an ingame CT-Profiles-like addon.

StarTip (Tooltips from Outerspace)

In World of Warcraft healers have to die. This is a cruel truth that you're taught very early in the game. This add-on helps you influence this unfortunate destiny in a way or another depending on the healer's side...

Assessment

Data Broker Display similar to FuBar

Modular and lightweight party/raid frames.

A simple slash-command-based addon for querying item information from the Blizzard servers via ItemIDs and SpellIDs.