WowAce

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

Display auras on action buttons.

Database of important locations for HandyNotes

Complete tradeskill information.

A library to provide information about zones and instances.

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

Collects Herbs, Mines, Gas Clouds and Fishing locations and adds them to the worldmap and minimap

Display front-end for LibGuildPositions-1.0 using HandyNotes

Plugs classical world style fonts into LibSharedMedia-3.0

Show item durability and quality in the character frame.

Database of Mailbox locations for HandyNotes

Am I locked out? - Displays all RaidIDs for all chars

Displays the remaing cooldown of the action you tried to use

Quest History tracker and shows lists of quests in each category

Campaign maps for Warcraft Conquest Moon Guard server

Wowhead Data dump for GatherMate

Unit Frames of awesomeness. Woof. It'll bite your face off.

Aloft

The core module for RW

Adds Scrolling Combat Text above your character