WowAce

ArenaPointer

Save and load macros.

Make it easy to explain bosses in Raids.

IDCard

Shows your FuBar addons in your LDB display.

SpyGnome

Gives detailed descriptions of particular localities, as zones or instances, and provides optional TomTom integration.

Manufac

Options for TinyTip

Tells you which blob to kill at the Yor'sahj encounter in Dragon Soul.

Simple display and management of Away / AFK / Busy / DND status via broker or minimap

EUF is an enhance of wow original unit frames, provides hp with both value and %, and optional 3D portrait. Simple and Useful.

Note + rep tracking for players, with guild data sharing.

Quickly see what counter-combinations your epic followers cover and which ones are likely to get a new combination when rerol...

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

FuBar_AlchemyFu

ItemSync the happy item gatherer and toolkit.

Lightweight time/date display with optional hourly chime.

Disease Tracker for Death Knights.

Announces Mage Spells in chat.