Keolab SpicyGuitar v1.3 MAC OSX, Win (Free!)

Standalone - AU - VST
Keolab has announced that Spicy Guitar is now available for Mac OS X in 32/64-bits universal binary (VST and AudioUnit).
Spicy Guitar is a free physically modelled acoustic guitar synthesizer.
Relying on an innovative technology, its sounds are rich, natural and lively.
edit. Kookaboo