FluidSynth - FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has...
Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
ZynAddSubFX - ZynAddSubFX is an open source software synthesizer for Linux, Mac OS X and Microsoft Windows.
Ampire - State Space Modeled guitar amp/cab/stompbox simulator.
VirtualMIDISynth - VirtualMIDISynth is a software MIDI synthesizer implemented as a Windows multimedia user driver...
TH-U - World class guitar amps and effects for PC and Mac