WowAce

Uses linear regression and a log of hitpoint values to estimate how long a boss has left to die and reach execute range.

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

Provides accurate, millisecond-level timing.

Tools to easily compare gear among party members.

Shift-clicking on a user name in chat shows a tooltip with their whois information.

A bar for all diminishing returns. Maybe nice for Arena, but intended for the third boss of Trial of the Crusader

Object-orientation library

obRaidAssist

TwiCo

Check for unenchanted and ungemmed items

How much of your life have you spent ingame?

Destruction Warlock priority module for clcInfo -- Maighurl

autoLFG

User-configurable protection for your inventory. Automatically buys back mistakenly sold items.

Lightweight line-based info-display frame

A creative frame managment library

NinjaPoints

New screenshot keybinds to automatically hide the interface during the shot.

Draws 3D portraits for main units that can be moved or resized at will.

"Range finder/display for Discipline's Holy Nova"