WowAce

A superior broker/LDB display for users of the Recount damage-meter.

VitalWatch

Heal and decurse by clicking on customizable raid/party unit frames

Stitch-1.1

KivinConsoleXP

Shared handling of media data (fonts, sounds, textures, ...) between addons.

A library to handle rearrangement of blizzard's frames when bars are added to the sides of the screen.

Fires events whenever a raid member "fails".

Nudge

TradeStop

Quest information

TrackingBar

Shows a circle on the minimap to indicate spell range

BarAnnounce3

A FPS Data Broker plugin.

Fancy up the ExtraActionButton frame

Cartographer_Fishing

Embeddable chat throttling library with traffic shaping and priorities

fmBuffCheck

Provides information about the player's bodyguard.