WowAce

Find five Ephemeral Crystals, get a pink hippogryph

LibItemInfo-1.0

Keeps track of your current location.

Friends list improvements: notes, remembering the information of offline friends, friend list syncing and backups, and a fuba...

Shows Status Bars that you can drag around and group up for your cooldowns

Display Garrison missons for all Characters

Tracks SendAddonMessage Spam

HUD that you can tweak the way you want.

Compact rune and proc display for Death Knights.

Necronomicon2

PT3Browser

Allows you to preview weapon glow in Dressing Room.

Enhances the default AddOns list.

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

Set and manage character notes that are displayed in unit tooltips and /who results.

Additional information about player spells.

Kiwi Plates

Good old LibTourist-3.0 for WoW Classic Era

Says random things in chat when casting any spell or ability. Type "/ss help" for the user's manual.

An auction house AddOn to make the life of each fence easier.