WowAce

Prat

Modular and lightweight party/raid frames.

AnyFont

Tooltip of awesomeness. Moo. It'll graze your pasture.

Tracks the HoTs you cast.

Checks your gear before bosses and yells at you if you're an idiot

An extension to the default WoW Unit Frames.

Provides one or many informational windows with optional interactive widgets.

Database of Vendor locations for HandyNotes

A library to provide information about zones and instances.

Configure triggers to send messages to your raid team such as timers, rotations, and health/power based triggers. Raid smarter not harder.

Death analysis tool

SacredBuff

Reports in raid chat whenever a raid member "fails." /EnsidiaFails to configure.

A collection of Rogue modules.

A library to help with localization of Zones.

Co-ordinated targetless Party and Raid wipe recovery. Evolved

LDB display of currencies, gold totals and session / daily / weekly statistics for all characters on a server.

Regain that wasted space!

OneBank3 will combine all the bank bags into one frame.