WowAce

Adds Scrolling Combat Text above your character

Violation

Tracking and ranking of dps/hps in a guild.

Visualises healing.

Highly-configurable shield / absorb tracker.

Track all threat redirection ability transfers and cooldowns (Misdirection and Tricks of the Trade).

Mutt (Macro Update Target Tool) provides slash-commands that can patch the predefined targets in your macros.

KillingSpree

Gathers statistics on certain chance-on-use spells, also known as procs.

Shows simple Buttons for your Cooldowns :)

Tracks, transmits and displays the cooldowns of your raid.

KoS-Management Tool

Compact & customizable filtering, monitoring and grouping of buffs and debuffs

Reorients the camera to be behind the character after a charge.

Tracks vulnerability debuffs on multiple mobs

Tracks the HoTs you cast.

pDebuffList

Provides quick access to information on your group and their equipment, enchant and gem choices.

Death reports

A Collection of Automations and Interface Tweaks.