WowAce

Mage Portal Whisper: whisper custom message when someone asked for a portal but youre busy.

Tracks money/tokens across all your characters; /goldwatch for options.

A collection management library similar to .NET's System.Linq

Bits

A customizable buff/debuff display replacement for the default Blizzard frames (with right click cancelaura support).

Replacement for WoW's flash/fade functions.

StopHealingMobs

Show order resources and troop counts in the Order Hall minimap icon tooltip.

End of combat reporting for feedback on how your cast time was spent or wasted.

Automatically sell junk, restock reagents and repair

Prints level and time played to chat and takes a screenshot when you ding

TuckUnitFrames

Automatic switching to FFA loot for Mimiron phase 3

A mini-game for World of Warcraft

Helps with interrupt notifications and announcements.

AnalogClock

Baggins_AltLevel

Fixes the TradeSkill search bar

Displays a table for possible outcomes of incoming hits with their probability

Adds "line of sight" status to Grid (after the error occurs).