WowAce

Simple Spell Alert

A data broker display, that shows one block per plugin.

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

AspectsBar

Questing minion

TuiRaidTracker

Some handy events that should exist in the default UI

Dims action buttons.

Searches bags/banks of all your characters/guilds.

Rebuff yourself with the mousewheel.

Dropdown library for Ace3 options, extensible to other options formats. Works ok.

A library to provide a clean dropdown menu interface.

Compact & customizable filtering, monitoring and grouping of buffs and debuffs

provides enchanters with a decent tool for managing their profession

Check the consumable usage of your raid

LittleTrouble

FuBar_AmmoFu

A simplistic clock.

Automates bites during the Blood-Queen Lana'thel encounter in Icecrown Citadel

Separate indicator for your HoTs with timer.