WowAce

Try on different gear and see their total stats and their differences. In short, an ingame CT-Profiles-like addon.

A simple slash-command-based addon for querying item information from the Blizzard servers via ItemIDs and SpellIDs.

Good old LibTourist-3.0 for WoW Classic Cataclysm

Saves and restores your action bars.

FuBar_BattlegroundFu

Track all threat redirection ability transfers and cooldowns (Misdirection and Tricks of the Trade).

A library that handles the basics of "window" style frames

Plugs classical world style fonts into LibSharedMedia-3.0

A simple combat log that displays events similar to SCT

GDKP gold run ledger

Allows the user to preview and track their progress in the collection of various transmogrification appearance sets

Adds a status to Grid for debuffs applied by Raid Bosses.

Adds Scrolling Combat Text above your character

PvE Status Frames

Addon to provide a much nicer map

StatLogicLib

Improve your barbershop experience with appearance profiles!

manipulate the minimap in numerous ways; move, scale, skin.

Database of Mailbox locations for HandyNotes

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