WowAce

Calculates incoming damage avoidance and mitigation

RangeRecolor

SanityItemCache

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

Niagara

GatherHud for GatherMate2 with Routes support

Shows the price of a single item in the Auction House.

Collects, analyzes and presents information about the virtual economy.

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

Control screenshot format and quality via FuBar

Converts incoming ALL CAPS CHAT into lowercase text.

LDB data source displaying rested XP for whole account

Complain about crowd control breaks.

MiniChat

A helper addon for the achievements "Let It Snow", "Fistful of Love", "Shake Your Bunny-Maker", "Check Your Head", and "Turkey Lurkey"

Calculates DKP based on Item Level

Shows who controls Wintergrasp and the time until the next battle.

Quixote

AbacusLib

A tool to appraise, estimate, or judge your equipment against the equipment of others.