WowAce

Checks Raid Buffs/Flasks/Consumables. Tunable alerts for misdirects, taunts, cc breakage, rez, dispel and interrupt

A simple combat log that displays events similar to SCT

A customizable casting bar replacement for TBC Classic & Classic WoW

Numerical and graphical display of Combo Points and similar buffs/debuffs. Also tracks Holy Power and Soul Shards.

XP bar using Ace3.

Entertaining kill-shot notification.

Aloft

Cleans up minimap buttons and makes them accessible through a pop out menu!

Teleporters in Suramar? Sure, why not?

Bayi's Extended Questlog

Display auras on action buttons.

A library to provide a markup syntax

Where the lore is at

AddOn development framework

Assessment

Deus Vox Encounters

Library providing mappings between trade skill recipes, spells and created items

Complete tradeskill information.

Improved Questing Experience

Show item durability and quality in the character frame.