WowAce

On login, displays changes to your guild since the last time you logged in.

ArenaHistory

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

EnvenomX

GridStatusIncomingHeals

nRaidTracker

BagSync

Destruction Warlock priority module for clcInfo -- Maighurl

Checklist and notes addon.

KC_PlayerFramePlus

RaidHelper

FuBar_combatTextFu

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

Library to provide non-explicit cooldown tracking and callbacks.

Tooltip scanning library.

IDCard

Drops the least valuable item in your bags to make space.

GemList

An attempt at giving a complete overview of Arena battles

Lists and/or reminds people missing flasks or food buffs at every ready check.