Mixxx - The most powerful free DJ software in the world.
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
keezy - A colorful soundboard. Play with music.
VirtualDJ - Virtual DJ Software - MP3 and Video mix software for DJs
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.