WowAce

TradeBar

A library to provide a way to easily create controls for Blizzard's options system

GirlFriend

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

Small Box Icon Pack for Cartographer

PVPtimer

Adds pipes which can control arbitary other statuses (like toggle status on key or "in combat"-state).

vChat

Tank statistics Data Broker plugin.

Provides a library for accessing auction data and pricing from various Auction Data mods

Allows you to loot BoP items without prompting when not in a group or raid

Shows a countdown bar for the duration of auras (e.g. HoTs, DoTs)

Adds cooldown timers to your trinket procs

pMutilate

Creates parameterized AceGUI-3.0 editboxes with autocompletion

CatPoints

FuBar_tTracker

A fountain of fonts for your funktastic UI.

An herb and ore gathering add-on with a focus on ease-of-use.

Simple search inspired by vBagnon