WowAce

Tracks specialization and talent data for group members

HunterAEP

Spell overlay customization and spell state HUD.

A menu with useful searches for Inventorian

Sets the DND flag, when are in combat.

Allows custom-triggered boss mod timers to be created

mDarkPact

Automatic tracking of the current target's creature type. For the discerning PvE hunter.

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

Outdated! Please use 'XLoot', available on Curse and WoWI

Filters AFK and DND messages after you've seen them once.

An extra set of 11x3 buttons, integrated into the default action bar.

Allows for gold tracking across multiple time frames

Raid level alternative player power warning (Atramedes, Cho'gall, Lord Rhyolith)

Gives a Smoother Quest Experience

A Healing Assignment management addon

Embeddable chat throttling library with traffic shaping and priorities

InstanceMaps

A Data Broker add-on for quickly switching your specialization with gear set and loot specialization.

Quest helping: fetching items to use, that sort of thing.