WowAce

AceBuffGroups

A simplistic clock.

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

Simple right click casting.

Keeps track of space left in your bags.

Monk Brewmaster/WindWalker Priority and Buff/Debuff Tracking Tool

HunterAEP

Configuration library

The One-Key-Mount™ — Simple to use, configured with Rock

Tracks the precise arrival & departure schedules of boats and Zeppelins around Azeroth and displays them on the Mini-Map and ...

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

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

FuBar_RegenFu

FuBar_SWStats2Fu

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

TradeStop

JasonQuest

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

TableTopLib

BeneCast 10