WowAce

FuBar_KillMeterFu

JasonQuest

Prints a message in your default chat frame when someone in your group gains an aura.

FuBar_RegenFu

SupplyAndDemand

AltClick an item in your bag to add it a mail, auction, or trade frame, and alt-click to buy a stack if reagents.

LDB data source displaying rested XP for whole account

GemCensus inspects people and records which gems they have socketed. Then displays which gems are the most popular.

Mutt (Macro Update Target Tool) provides slash-commands that can patch the predefined targets in your macros.

Combat log evolved.

Gives a score for your kit allowing easy comparison with others, also colour codes kit based on appropriateness for your level.

Simple display and management of Away / AFK / Busy / DND status via broker or minimap

SliceWatcher

Heads Up Display with Player and Target Info

Monitors for friendly deaths and announces them as in Myth: The Fallen Lords

Configuration library

Reorients the camera to be behind the character after a charge.

Give logical progression of Mining, Herbalism & Skinning. Will not be updated with WoD zones

Quickly assign the highest follower to each building or unassign all of them.

Estimated time until current target will die.