WowAce

mHud

BananaBar2

Gives a score for your kit allowing easy comparison with others, also colour codes kit based on appropriateness for your level.

Tracks whispers and conversations

Search, filter and craft gems in the game!

This will keep track of how much you have paid per item in your inventory. Only one of (Auctionator, Auctioneer, AuctionLite,...

StitchUI

Tracks interrupts

Adds Raid Target Icon status to Grid (Player or Player Target).

Lag tolerance module for Broker displays.

Aura alarm.

Automagical macros for each talent tier.

Show extra information about Jewels and Enchants in tooltips.

Monk Brewmaster/WindWalker Priority and Buff/Debuff Tracking Tool

Constructs a SimC export string for an item without equipping it

Provides a quick display for the LFG Call to Arms

Displays reagent count on spell action buttons

Add lines to ore and gem tooltips that show prospecting sources/results.

Adds achievement reminders to BigWigs

RaidSpy