Waves GTR - From Fender® to Marshall®, Mesa/Boogie® to Vox®, and more, Waves has captured...
Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
GNUitar - GNUitar is guitar effects software that allows you to use your PC as guitar processor.
TH-U - World class guitar amps and effects for PC and Mac
go-dsp-guitar - A cross-platform multichannel multi-effects processor for electric guitars and other instruments.
GuitarINUX - GNUGuitarINUX is a live lightweight GNU/Linux distribution for guitar players.