WowAce

Action button layout and configuration

Add-on that shows in a unit tooltip window a number of killed mobs of the same kind

Collects and displays census information. This AddOn is licenced under the GNU GPL, see GPL.txt for details.

A simple, zero config, trash item seller

BangItHarder

FuBar_AlarmClockFu

Skills plugin for any DataBroker display.

Langoustine

Adds Buff/Debuff icons to the grid frame.

A simple Fubar plugin for Cartographer_Routes to quickly show/hide routes in the current zone

GirlFriend

Adds a Friendly Fire mode and data collection to Skada.

Spell interrupt aid and announcement addon.

A Data Broker plugin to display how long you've been playing

Restores channels and channel-window associations after disconnects remove them.

Bug fix for the Blizzard calendar -- prevents unexpected window closure while editing events

GDKP gold run ledger

Sets you to DND when you fight a boss, and some other crap.

Party and Raid roster library - one library for any group

A helper addon for the achievements "Let It Snow", "Fistful of Love", "Shake Your Bunny-Maker", "Check Your Head", and "Turkey Lurkey"