WowAce

Keeps track of quests.

Database sharing module for GatherMate2

Load manager for AddOns

View bank, inventory, mail, equipped and guild bank contents from any character anywhere!

Barks at you when you target a crowd-controlled unit

Fires events whenever a raid member "fails."

Talismonger-3.0

Aura alarm.

Allows tradeskill usage by clicking items or reagents.

Loudmouth

Show where the chests are for Withered Army Training

Hook extra menu to friend list, guild list and chat player

Displays Pet Info for Hunters and Warlocks. Also keeps track of Stables and Pet and Demon skills.

Tracks, transmits and displays the cooldowns of your raid.

IncomingHealsLib

Creates virtual cyphered chat channels over guild addon communication channel.

cyCircled

A data broker display, that shows one block per plugin.

Shows mana usage as a percentage in a spells tooltip.

Easily mail friends, guild members, alts and others