WowAce

Create panels for customizing your UI, sucessor to eePanels

Checks your gear before bosses and yells at you if you're an idiot

Auto repair + shows durability.

Keeps track of HoTs, DoTs, Buffs and Cooldowns. With audio and text alerts to refresh them.

Redirect character errors, system messages and information messages.

Manufac

Displays the remaing cooldown of the action you tried to use

Quest History tracker and shows lists of quests in each category

XRS

Marks the locations of Hallow's End candy buckets on the worldmap and minimap.

Adds countdown voices from Heroes of the Storm to BigWigs for all supported locales.

CandyBar style cooldown display

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

Regain that wasted space!

Sells all junk in your inventory at once.

Prat

GotWood

Serenity skins for Masque.

Switch macro depending on zones or BigWigs boss modules.

Automated smart raid marking to speed up trash clearing in instance runs