WowAce

Hunter 'Misdirection' activity and cooldown monitoring for raids/groups. 'Readiness' aware.

FuBar_TinyTipFu

Rep2 displays a message, which shows how much reputation you gained, and how much is needed until the next standing.

FuBar_UIReloadFu

TableTopLib

Simple font replacement

oUF element for highlighting debuffs that are dispellable by the player

Adds indicators to the sides of Grid frames.

Crowd-control monitor

Prints a message in your default chat frame when someone in your group gains an aura.

Displays reagent count on spell action buttons

JasonQuest

Shows a money overview for your current realm in the tooltip on the money in your bags

Bars showing amount of buffstacks

Library for tracking cooldowns of other players

A death track window for Recount

VersionChecker

GridAlert

Tracks interrupts

A simple data broker display for current Artifact Power