WowAce

Audible Alerts for self-gain, self-lost, any-gain, all-lost of statuses.

SVG Render-bender

A Latency Data Broker plugin.

Embeddable library to track raid/party roster

Reminds you to Life Tap and Dark Pact

NextStep

Shows the price of a single item in the Auction House.

Records mail when visiting the mailbox to make keeping track of mail and expiration dates easy.

Capsule

Lists and/or reminds people missing flasks or food buffs at every ready check.

Manages the scanning of the auction house in a reliable an efficient manner.

Raid target control and instance shortcuts for Broker

LibDataBroker plugin showing some random XP related data

LibRockComm-1.0

Gives equipped and overall iLvl to indicate the quality of a character's gear.

Adds an Atlas button to FuBar.

Warnings about tanking specific abilities

BarovHelper

Communicates with guild members for their positions on the world map

Library to aid in the classification of Mounts