WowAce

Displays additional information for Mythic Keystone dungeons

Changes the look of the default UI

A modular, lightweight and screen-estate saving grid of party/raid unit frames

Displays information about the current zone on the World Map for WoW Classic Era

Displays information about the current zone on the World Map, for WoW TBC Classic

Good old LibTourist-3.0 for WoW Classic Era

Good old LibTourist-3.0 for WoW Classic Mists of Pandaria

A powerful, comprehensive utilty for displaying graphics and information based on buffs, debuffs, and other triggers.

Allows you to view all items from all your characters on the same account, when-ever and where-ever you want.

TomTom CrazyArrow pointing to the targeted group member

Display auras on action buttons.

Postal: Enhanced Mailbox support

Give whispers an instant messenger feel.

Adds countdown voices from the heroes in Overwatch to BigWigs.

Toss those bugs inna sack.

Kiwi Plates

Tracks rare drops, including companions and mounts

AddOn development framework

Chat addon, filtering messages and UI changes

Shows the mirco menu and game menu in a clickable broker tooltip.