WowAce

Allows the user to preview and track their progress in the collection of various transmogrification appearance sets

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

OneBank3 will combine all the bank bags into one frame.

Dynamic mount macro generator

Queing of /who and SendWho() queries and a much better interface (see docs), with gurantee to be executed & callback.

Textures for Stop Motion

Static library of wow map data

A replacement tradeskill window for Classic

An extension to the default WoW Unit Frames.

Adds various information based on PeriodicTable to item tooltips.

Simple Spell Alert

Shaman totem bar

Keeps account of attendance and loot for raids, parties, bgs, arenas and solo for questing.

Shows skills in a tooltip and allow them to be used. Also keeps track of Cooldowns.

Prat

Visualises healing.

Angry Raid Points

Displays online guild mates.

XRS

The Talent Template Editor