Bandlab Technologies are the owners of the Cakewalk DAW, taking on its development as well as owning several other brands, they have Bandlab.com - which provides an online DAW that runs in the Chrome browser - which lets you throw down musical ideas using Web Audio and Web MIDI and have unlimited free storage in the cloud, offers a kind of musicians dating site, or rather creative hookup platform.
These things are often dependent on the size of the community and with over 5.5 million users, the chances of finding someone you can collaborate with, either virtually or geographically near you in person are pretty high.
Deep look at the new generation interface
Artist, Producer, Remixer and Performer
Desktop polyphonic MIDI and CV/Gate