WowAce

Timers for Buffs, DOTs, CC effects, etc..

Good old LibTourist-3.0 for WoW Classic Mists of Pandaria

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

Reports on a configurable dashboard or to group chat on consumables, buffs, AFK, mana and many many others but in an intellig...

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

Achievements

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

Quest History tracker and shows lists of quests in each category

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

Lightweight but powerful auction house interface

Adds mob patrol paths to your map.

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

One large inventory.

Static library of wow map data

Max Camera

Aloft

A replacement tradeskill window

Calculates and shows your TankPoints in the PaperDall Frame.

Adds a status to Grid for debuffs applied by Raid Bosses.

Displays the locations of Lunar Festival elders.