WowAce

Manage Raid Queues

Show a bar indicating the remaining lifetime of your temporary pet

Reports the total threat on a mob at the end of combat.

Check for unenchanted and ungemmed items

Baggins_BtmScan

fixes the issue with InterfaceOptionsFrame_OpenToCategory not actually opening the Category (and not even scrolling to it)

IFrameManager

LibCooldown-1.0

Improved Mailbox

Displays an estimated time until you're out of mana

MD5Lib

DaedUI skin for Masque.

switches Bartender4-profiles when changing spec

Assistace for Blackhand (Mortar warning in P2, custom says for bombs and marks in P3)

Object-orientation library

Ranged stats Data Broker plugin.

Shows what stat was reforged in item tooltips.

BiSList allows you to configure your BiS items list, and keep track of how far you are from them

A money data broker plugin.

Makes most default frames movable (mailbox, achievements window etc.)