WowAce

Estimated range display. Type /rangedisplay for config

Data Broker Display similar to FuBar

Handy notes for your maps

Automatically turns on the combat log for selected instances

Creates and manages secure Action Buttons

Adds a button to the quest completion interface which allows you to auto equips selected quest Item after completion

Marks the locations of Hallow's End candy buckets on the worldmap and minimap.

Makes the default frames moveable via simple drag and drop

Changes the look of the default UI

Marks the locations of Midsummer Fire Festival bonfires on the worldmap and minimap.

Displays the locations of Lunar Festival elders.

World of Warcraft Classic addon to display current zone information.

Modular damage meter.

AddOn development framework

Chat addon, filtering messages and UI changes

Show the transmog appearance of an item when you mouse over it, and shows collection-status in bags, shops, and elsewhere. Works on transmog, mounts, pets, and decor.

The original source for where things are in Pandaria

Show item levels in the character frame

Scan for rare mobs so you can find them and their loot

Adds a Button to the Worldmap which toggle Handynotes