Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
AudioRetoucher - AudioRetoucher is a tool for analyzing music, changing tempo and pitch in real time
AmpliTube - Guitar Amp & FX modeling plug-in • Amp, Stomp, Cabinet + Mic, Rack FX modeling
Chordify - Chordify turns any music or song (YouTube, Deezer, SoundCloud, MP3) into chords.
Ampire - State Space Modeled guitar amp/cab/stompbox simulator.
Guitaa.com - Turn ANY song into chords, play along with interactive chords and diagram, transpose, loop, tempo control.