WowAce

Shows the mirco menu and game menu in a clickable broker tooltip.

A Simple World of Warcraft Spam Filter!

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

RaidAgent

Jewelcrafting data for Ackis Recipe List.

In-game EPGP guild helper, supports standby, main/alt shared pools, minEP, offpecGP. Fixed price list with progress multiplier.

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

Adds a status to Grid for debuffs applied by Raid Bosses.

CT_RaidAssist style raid frames

Says random things in chat when casting any spell or ability. Type "/ss help" for the user's manual.

Shows simple Buttons for your Cooldowns :)

FuBar_HonorFu

manipulate the minimap in numerous ways; move, scale, skin.

Open all your mail

Antagonist

PT3Browser

Display aura information inside action buttons

Keeps track of quests.

KoS-Management Tool

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