keezy - A colorful soundboard. Play with music.
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Music Memos by Apple - An app to capture your song ideas
Splice - Music creation, collaboration, and sharing made simple.
AIVA - The AI composing emotional soundtrack music