Not sure if this has the maturity or feature set you're looking for, but a pretty interesting development on top of Sovereign's federated roll-your-own cloud pl

Not sure if this has the maturity or feature set you're looking for, but a pretty interesting development on top of Sovereign's federated roll-your-own cloud platform: http://sneer.me/project.html http://sneer.me/project.html There are also some interesting papers if you search for 'peer to peer CPU resource sharing'.