WowAce

Show a bar indicating the remaining lifetime of your temporary pet

LibCooldown-1.0

GridStatusHealPriority

Shows the Guild Achievements Points and Members in the tooltip

Uses TomTom to show target location if target is in party or raid.

Not required if you already have TinyTip, as this is a basic TinyTip module. Allows you to reposition the tooltip, smart repo...

Takes a screenshot when you kill a boss or gain an achievement

With Mists of Pandaria Blizzard publish all characters from an account unless you disable that 'feature'. This addon warns you.

LibAvionOptions-2.0

Modality

An herb and ore gathering add-on with a focus on ease-of-use.

Broker_Durability

FuBar_EpicCountFu

SuccessionDKP

Displays a table for possible outcomes of incoming hits with their probability

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

AtlasLoot wishlist match.

MarySue

Extends Gladius with diminishing return tracking

Resolve module for Broker displays.