WowAce

A fancy LDB reputation display, show faction reputation and reputation change history

A library to provide unit-oriented tags to LibDogTag-3.0

Floating Combat Text of awesomeness. Caw. It'll eat your crackers.

Point to quest POIs on your minimap

Bayi's Extended Questlog

Automated smart raid marking to speed up trash clearing in instance runs

A Friend-Enemy-Unit-Frame for battlegrounds.

Archaeology Assistant

Collectinator is an addon which will scan your pets and mounts and provide information on how to obtain them.

Show all the leyline taps in Suramar

Calculates and shows your TankPoints in the PaperDall Frame.

Collects Herbs, Mines, Gas Clouds and Fishing locations and adds them to the worldmap and minimap

Deus Vox Encounters

Smooth combat HUD based on ArcHUD2

Attach diminishing return icons to unit frames.

Bulk mail reception made really easy

Displays the locations of the chests for the Treasure, Treasure Everywhere achievement

Unit Frames of awesomeness. Woof. It'll bite your face off.

Complete tradeskill information.

Queing of /who and SendWho() queries and a much better interface (see docs), with gurantee to be executed & callback.