Ken Webb 2010-04-18T02:09:32Z
Fractal is "a modular, extensible and programming language agnostic component model that can be used to design, implement, deploy and reconfigure systems and applications". Fractal appears to have some similarities to Xholon.
Jean-Bernard Stefani (INRIA Grenoble) has put together a good introductory presentation. I haven't had a chance to look at most of the rest of the documentation and publications yet.