WowAce

Show a bar indicating the unit's Soul Shard count.

Send Messages encoded with the hexadecimal system

Mutes Annoying Sounds

ClosetGnome_Banker

Holy Power, Shadow Orbs, Rogue Combo Points and Monk Chi.

Chat frame tweaking module for TweakHub.

Never forget which one in that 5-mob pull casts what spell again.

MorgBid

Unit testing framework for World of Warcraft addon development.

The ultimate in lazy Ulduar raiding

SpoilsOfWar

TickTo

Save and send chat messages to many channels. Allows quick item and profession linking within your messages.

Monitors the combatlog identifying players from the oposite faction near you.

Adds Auctioneer "bought for" filters to Baggins ("disenchant", "vendor", etc)

Adds TargetIcon status to Grid2 (player / player-target).

Broker add-on for GemHelper

User-configurable protection for your inventory. Automatically buys back mistakenly sold items.

LibRockDB-1.0

A variant of AceGUI's Frame container with an editable input field