WowAce

TableTopLib

Poppins

mHud_Threat

Captures chatframe Tradeskill Links for later reference in an easy to read format

Does a /who search of multiple dungeons.

Database of FlightMaster locations for HandyNotes

FuBar_RaidBuffFu

Adds item values to chat messages.

A FuBar plugin to show Recount.

Quest helping: fetching items to use, that sort of thing.

Adds Archaeology items to AdiBags virtual groups

A PitBull4 module which shows an arrow that points to raid members

Customizing your buff display

Provides data about all artifacts in the player's possession.

Highly-configurable shield / absorb tracker.

CrayonLib

In-game EPGP guild helper, supports standby, main/alt shared pools, minEP, offpecGP. Fixed price list with progress multiplier.

Historian

For Developers (of Addons which uses LibWho-2.0): show queues and queries in realtime

One-click smart mounting.