WowAce

Shows all the targets in the raid

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

Bits

Adds aggro coloring to oUF.

See all incoming casts on your target. Also includes resurrection monitor. Uses libhealcomm-3.0 and librescomm-1.0

Adds achievement reminders to BigWigs

FuBar_PitchFu

Notifies you when you get aggro.

Joins the LFG channel automatically.

FuBar_GrindFu

Counts stacked lifeblooms and uses progressive colors to indicate the active number of HOTs.

Provides data about all artifacts in the player's possession.

Simple, nice-looking power bar addon for all classes.

Library for tracking mouse gestures

Colors friends/bg score board/who list names by class color

Automatically converts a party to a raid when you attempt to zone into a raid zone without a raid.

A mod to filter the Trade chat, shunting it to a seperate chat window if it exists (chat window is OMGWTFBBQ).

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

DKPmon

A library that maintains a cache of items and their types.