Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.

Waves GTR - From Fender® to Marshall®, Mesa/Boogie® to Vox®, and more, Waves has captured...

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

Ampire - State Space Modeled guitar amp/cab/stompbox simulator.

go-dsp-guitar - A cross-platform multichannel multi-effects processor for electric guitars and other instruments.