WowAce

Keeps track of space left in your bags.

Display Garrison missons for all Characters

A collection of Rogue modules.

Automatically leaves the global channels when inside an instance/raid and restores them when exited.

Database of FlightMaster locations for HandyNotes

ClosetGnome_Switcher

Some handy events that should exist in the default UI

Easily mail friends, guild members, alts and others

LDB data source for currency flow

Tracks the current Fear Ward's in the raid or party.

KillingSpree

Animated target indicator

Pins on the World Map for quests you have not completed yet

Better quest log and tracker

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

Proximo

Enhancer

Necronomicon2

Loot Distribution System

New/Old BG indicator, Join by ID, Quick Leave Queue, etc.