WowAce

Shows where the equipment of inspected users or yourself is from.

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...

Shows missing buffs and handles welfare and deluxe buffs as one (motw/gotw, blessings, etc.). This lets you see when you nee...

SurfaceLib

Raid level alternative player power warning (Atramedes, Cho'gall, Lord Rhyolith)

Durability Data Broker plugin.

World of Warcraft Classic addon to display current zone information.

Makes grid QuickHealth aware

A 'channeling spell'-tracking addon for Affliction Warlocks. Drain Soul, Drain Life/Harvest Life and Malefic Grasp.

DHUD2

Bidder

Save and load macros.

Adds item values to chat messages.

Shared handling of media data (fonts, sounds, textures, ...) between addons.

Automagically call who should cross over

Allows for easy congratulating when someone earns an achievement.

CombatAnnounce

JostleLib

FuBar_PetInFu

KivinLootzor