WowAce

Adds manabars to the sides of Grid frames.

Automatic Refilling of User Defined Items

Aspect checker addon for Hunters.

QuestAnnouncer

Give logical progression of Mining, Herbalism & Skinning. Will not be updated with WoD zones

Reduces interface tedium by doing the little things for you.

GemCensus inspects people and records which gems they have socketed. Then displays which gems are the most popular.

Searches bags/banks of all your characters/guilds.

Library providing mouse-click support for LibQTip-1.0.

Tools for MultiBoxers or Group questing/leveling

Pins on the World Map for quests you have not completed yet

Tracks interrupts

Good old LibTourist-3.0 for WoW Classic Era

Adds a button to your character and inspect window that shows a summary of gear enchants and gems.

LilSparky's Workshop mod for Trade Skills

Reports in raid chat whenever a raid member "fails." /EnsidiaFails to configure.

Displays classes and specialisation dependent stat priorities provided by icy-veins.com

ItemBonusLib

Database of FlightMaster locations for HandyNotes

Smooth group roll frames