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AddOns
OPie
Binding-activated radial action bars.
Spade
Makes Sunsong Ranch awesome.
Forward
Toggle autorun from a macro (or OPie).
M6
Put better macros on your action bars.
Tools
FrameXML archive
Blizzard API Docs
Globe
Upload a taint.log
TGA converter
BLP previewers
LuaCASC