WowAce

Gears skins for Masque.

Checks Raid Buffs/Flasks/Consumables. Tunable alerts for misdirects, taunts, cc breakage, rez, dispel and interrupt

Rebuff yourself with the mousewheel.

AddOn development framework

Show buffs on nameplates.

Am I locked out? - Displays all RaidIDs for all chars

OneBag is a replacement for the default game bags that combines all the bags into one frame.

Display auras on action buttons.

Adds various information based on PeriodicTable to item tooltips.

Sells all junk in your inventory at once.

Library that tracks incoming heals

Auto repair + shows durability.

Tooltip of awesomeness. Moo. It'll graze your pasture.

Keeps account of attendance and loot for raids, parties, bgs, arenas and solo for questing.

Remember locations that city guards direct you to for HandyNotes

Redirect character errors, system messages and information messages.

Antagonist

Violation

Bulk mail reception made really easy

Alternate Power- and Combopoint/SoulShard/HolyPower-bar