WowAce

A library to provide unobtrusive notifications.

Darkness

Allows communication to be shared across realm through Battle.net.

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

BagPress

KeepItCool

Mark Worshipping player during the Cho'gall encounter

UnitActionBars2

Write event handlers in a simple GUI in-game

Inserts some media that is already present in the game into LibSharedMedia's storage.

A simple, standalone Resurrection Monitor

Makes most default frames movable (mailbox, achievements window etc.)

Makes it very easy to collect rare battle pets.

Pet feeder, called by "/click FeedItButton" from a macro.

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

New/Old BG indicator, Join by ID, Quick Leave Queue, etc.

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

Interface for addons to include extra information on the GuildMemberInfo frame.

Extends the functionality of bars in SUF

Meeuuuh