WowAce

Adds support for LibFilter to Baggins

Adds dungeon role icons to Grid2

LDB data source for Instance Tracking

Try to keep them thar pets wrangled

Lightweight line-based info-display frame

Provides accurate, millisecond-level timing.

Action slot widget for AceGUI-3.0.

ClassButtons

RBM_BlackTemple

Unit testing framework for World of Warcraft addon development.

Adds trinket tags to SUF

Changes several of the popup dialogs to not close when hitting the Escape key.

With Mists of Pandaria Blizzard publish all characters from an account unless you disable that 'feature'. This addon warns you.

RBM_Config

Adds an inobtrusive circular castbar around the mousecursor, handy for Clique users

Reports in raid chat whenever a raid member "fails." /EnsidiaFailsWotLK to configure.

SimpleBar

FuBar_WaypointsFu

Diplomat

I've invented a device that tells you when reactive abilities are available!