AudioTool - Whether you want to make music for the club, or you're aiming to put a few tracks to a film, Audiotool is a website geared towards putting the mixes at your fingertips. Read more about AudioTool.
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
LinuxSampler - LinuxSampler - free, open source pure software audio sampler with professional grade features.
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Samplr - Samplr app for iPad lets you make music and play with sound by touching it with your fingers.
Splice - Music creation, collaboration, and sharing made simple.