WowAce

Intended to be a complete guild management tool suite)

BetterMagnet

Wipemate is a statistics add-on that displays a list of raid members, sorted by kills or wipes. It gathers this information a...

A Healing Assignment management addon

Congratulate people when they ding

Displays an estimated time until you're out of mana

RaidMarshal

Broker launcher plugin for Recount

Steroids

GigaItemAuction

Hold a key to temporarily center and magnify the Minimap.

Creates a broker plugin for all your broker launchers

Thok Cooldown Rotation

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

Draws 3D portraits for main units that can be moved or resized at will.

Baggins_ItemRack

Reputation tweaking module for TweakHub with auto watched faction selection and detailed rep info updates.

School

Interface for addons to include extra information on the GuildMemberInfo frame.

Status indicator that shows if a unit is hostile (probably mindcontrolled)