WowAce

Complete tradeskill information.

Display auras on action buttons.

Database of important locations for HandyNotes

Display front-end for LibGuildPositions-1.0 using HandyNotes

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

Show item durability and quality in the character frame.

Plugs classical world style fonts into LibSharedMedia-3.0

A library to provide information about zones and instances.

Displays the remaing cooldown of the action you tried to use

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

Database of Mailbox locations for HandyNotes

The core module for RW

Quest History tracker and shows lists of quests in each category

Campaign maps for Warcraft Conquest Moon Guard server

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

Adds Scrolling Combat Text above your character

Deus Vox Encounters

Aloft

A simple combat log that displays events similar to SCT

Wowhead Data dump for GatherMate