WowAce

Disease Tracker for Death Knights.

A simple interface for unitframe click casting.

Angry Boss Reminders helps raiders switch to the proper talents, glyphs, and gear for each boss during a raid.

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Check the consumable usage of your raid

Add SyLevel item level display support to Bagnon.

Good looking, smoothy and helpful nameplates

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Instant PROC notification

MainAssist

A customizable view of friends and guildmates.

MiniPet, Always keep your little companion with you, based on the work of Carra.

Shows the minimum durability of equipped items on the stats frame.

Sheppard

A small checklist for raid (de)buffs and who brings what.

A Mount and Companion manager

RoleCall allows you to easily see the talent specs and roles of everyone in your group.

Allows tradeskill usage by clicking items or reagents.

Pet Theory

Monitors the combatlog identifying players from the oposite faction near you.