WowAce

BigWigs_Debugger

ChatAssist2Options

Enables you to save multiple talent configurations

Recount2

clcInfo module for all Warlock classes

DebugLogBackend

Tracks money/tokens across all your characters; /goldwatch for options.

Simple item compare tooltips

BabyWigs

Show a bar indicating the remaining lifetime of your temporary pet

A noble spirit embiggens the smallest player arrow.

Configure which layout or profile to load on entering a zone

Makes most default frames movable (mailbox, achievements window etc.)

Check for flask/food buffs

Notepad for Lua scripts and mini-addons.

Tankadin

KeepItCool

Raid assignments planner

Tracks your crits.

ChatStamp