WowAce

Simple oRA3 Maintank Target Frames, based on oUF

AVR Encounters

Good old LibTourist-3.0 for WoW Classic Mists of Pandaria

DogChow

FuBar_CheckStoneFu

Reno is a slash-command that can patch predefined options in a macro to change which actions will be chosen.

Dedicated to Lazybones of EU Khadgar who had the original idea as he can't find a damn thing in his bags. You're a great guy...

Gathers statistics on certain chance-on-use spells, also known as procs.

Open inventory items with 1 button

Adds party/raid role icons in useful places

ShadowGreenLight helps you decide if recasting SWP/Corruption is worthwhile

Privacy2

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

Fixes UI bugs

MainAssist

Stores a browsable database of spells that mobs cast

Note + rep tracking for players, with guild data sharing.

FuBar_FuXPFu

Review any raid or party members recent incoming combat along with health level.

Provides database of quest giving npcs/mobs/objects for display on the World Map/Minimap