WowAce

BiGOpt

A simple interface for unitframe click casting.

Display bag usage on each of your bag slots.

Keeps track of performance of memory, latency, and framerate.

Cartographer_Routes

A library to get currencies' related information

Shows where the equipment of inspected users or yourself is from.

Displays how many times you have jumped.

Questing minion

Inspects all members of raid and saves in database, as well as lists people's dkp values

Provides shareable notes and other information for your guild, party and raid community.

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

Reduces interface tedium by doing the little things for you.

Co-ordinated targetless Party and Raid wipe recovery. Evolved

Smart mount randomization on a button! Empty coconut halves not included.

Adds custom effects to your cursor.

Dims action buttons.

Save and load macros.

AltClick an item in your bag to add it a mail, auction, or trade frame, and alt-click to buy a stack if reagents.

FuBar_uGuild