WowAce

Automatically switches Profiles of addons when changing spec

Configurable dynamic combat logging extender module for TweakHub.

Keeps track of people who have recently sent you messages.

Try to keep them thar pets wrangled

Shows more recipies in the profession window.

Tooltip scanning library.

A simple addon that warns you if your pet isn't attacking while you're in combat.

Fizzlebag

A Latency Data Broker plugin.

Communicates with guild members for their positions on the world map

Hunter 'Misdirection' activity and cooldown monitoring for raids/groups. 'Readiness' aware.

See all incoming casts on your target. Also includes resurrection monitor. Uses libhealcomm-3.0 and librescomm-1.0

Shows all the targets in the raid

DungeonCrawler

KivinConsoleXP

FuBar_TinyTipFu

Replacement for WoW's flash/fade functions.

TMrecruit

SpoilsOfWar

Adds a simple percentage threat status to Grid.