Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Kompoz - Kompoz is an online platform for crowd-sourcing music creation, making you record, create or publish music with the guidelines of a world-class musical expert.
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Encore Music - An open source, extendable music player for Android.
keezy - A colorful soundboard. Play with music.