WowAce

Good looking, smoothy and helpful nameplates

Replacement for the default nameplates.

oUF layout looking like ag_Unitframes and Grid.

ag_Pimpster

oUF element for highlighting debuffs that are dispellable by the player

Fade Blizzard Raid Frames

Adds Raid Target Icon status to Grid (Player or Player Target).

Allows combined aura detection. motw + gotw, all 4 mage int buffs, etc. in one status.

Adds a third text indicator to Grid.

Shows the group leader, raid assistants, and master looter in Grid.

iTargetingFrames

Target assistance by automatic rewriting of macros

Adds 3 indicators to each side (top, bottom, left and right).

Shows missing buffs and handles welfare and deluxe buffs as one (motw/gotw, blessings, etc.). This lets you see when you nee...

An attempt at giving a complete overview of Arena battles

Display an arrow that points to a raid/party member anchored to raid frames

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

Simple and rich Death Knight rune customizations

Configure which layout or profile to load on entering a zone

Provides extended aura status settings.