Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
AmpliTube - Guitar Amp & FX modeling plug-in • Amp, Stomp, Cabinet + Mic, Rack FX modeling
Ampire - State Space Modeled guitar amp/cab/stompbox simulator.
GNUitar - GNUitar is guitar effects software that allows you to use your PC as guitar processor.
ToneStack - Complete guitar studio with an huge range of amps, cabs and effects.
ToneLib GFX - The perfect custom tone with a complete guitar studio in your computer