WowAce

Battleground Timers in a HUD around the Blizzard BG status

Dropin replacement library for SetBackDrop

MountUp

Adds Name and Buyout Price sort columns to the auction house.

Uses guild notes to add alts' main names to chat windows and other places

Allows you to prevent addons from sending and receiving messages.

FuBar_FuXPFu

LDB data source displaying rested XP for whole account

Displays info about who rolled Need/Greed/Pass on items that are currently rolled for

Square Minimap and more

Allows custom-triggered boss mod timers to be created

EnchantList

A simple data broker display for current Artifact Power

SpyGnome

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

Color manipulation library.

FuBar_MonkeyQuestFu

Cartographer_Fishing

Allows you to create icons, which can be customized greatly by user's input. CiR is more than just the usual cooldown tracker.

Avion