WowAce

Customizing your buff display

JostleLib

Spell overlay customization and spell state HUD.

Lets you drag UI frames around

AuctionSort

Adds a highlight border to items in your MogIt Wishlist, making them easier to see.

Shows your standings with the factions.

WoWonid

Shows a window displaying any raid member below 10,000 health during the Chimaeron encounter.

A Data Broker add-on for quickly switching your specialization with gear set and loot specialization.

EBB-inspired buff bars with click-to-remove support

A library to help with localization of Archeology dig sites

School

TrickOrTreat

Simple Bars for your Shaman's weapon buffs and shield spells.

Helps you automate selling stuff

Vox

Keeps track of time played and rested XP across your characters.

Allows movement and scaling of class-specific resource displays

Simple, light-weight, LDB-enabled timer that tracks how long you spend in combat