Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
Guitartapp Chord Pro - Guitartapp Chord Pro is the world’s largest and popular music and audio app that allows you to throw away your songbooks and start jamming with this app.
AmpliTube - Guitar Amp & FX modeling plug-in • Amp, Stomp, Cabinet + Mic, Rack FX modeling
go-dsp-guitar - A cross-platform multichannel multi-effects processor for electric guitars and other instruments.
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.