WowAce

Automatically sells low quality gray items to the vendor.

Shows at-a-glance what raid buffs/debuffs you have.

Adds Buff/Debuff icons to the grid frame.

Save and send chat messages to many channels. Allows quick item and profession linking within your messages.

Party and Raid roster library - one library for any group

ezIcons

Show a rough range indicator

Raid target control and instance shortcuts for Broker

Stitch-1.1

Opacity effect on action buttons in cooldown.

Skills plugin for any DataBroker display.

LibFuBarPlugin-3.0

MoBuffs

VendorSearch adds search features when buying items from any vendor

Adds a third text indicator to Grid.

PowerPoint goodness for your addon

A menu with useful searches for Inventorian

Counts stacked lifeblooms and uses progressive colors to indicate the active number of HOTs.

Adds icons to the configuration menu for all standard Grid indicators.

KivinSpamGuard