Legion and Condor were early successes in network computing. They predate Java, hence are not Java-centric, and indeed do not use a virtual machine to overcome the portability/interoperability problem associated with heterogeneous machines and OSs. The use of a virtual machine is a significant difference between Java-centric andprevious systems. Charlotte was the first research project, to our knowledge, that was Java-centric. Charlotte used eager scheduling, introduced by the Charlotte team, and implementeda full distributed shared memory. Globus is a metacomputing or umbrella project. It consequently is not Java-centric, and indeed must be language-neutral. CX is intended to fit under Globus's umbrella via a portal. Javelin is Java-centric, implements eager scheduling, and has a host/broker/client architecture.Huberman relate anonymity to incentives, in their application of the ``tragedy of the commons" to anonymous peer-to-peer networks. Similar conclusions apply in this setting, further motivating non anonymous serviceproviders (e.g., producers and task servers).Securing the Jini infrastructure is not a focus of this project;commercial efforts are under way to do this.(see, e.g., Personal Genie's Secure Lookup Service). Recent commercial ventures attest to the perception that unused cyclescan be made available in a computationally meaningful way. Such ventures, while still in their infancy, include EnFuzion (targeted at intranets), Applied Metacomputing (the commercialization of Legion), Distributed Science (aka the ProcessTree), Entropia,Parabon Computation, Popular Power,and United Devices. 
 

Academic projects	Commerical ventures
Legion University of Virginia  http://www.cs.virginia.edu/~legion/ Condor University of Wisconsin Madison  http://www.cs.wisc.edu/condor/ Polder University of Amsterdam  http://www.science.uva.nl/projects/polder/ MOL University of Paderborn  http://www.uni-paderborn.de/pc2/projects/mol/ Javelin University of Santa Barbara  http://javelin.cs.ucsb.edu/	EnFusion http://www.turbolinux.com/products/enf/  Applied Metacomputing http://www.appliedmeta.com/  Distributed Science (aka ProcessTree)  http://www.processtree.com/  Entropia http://entropia.com/  Parabon Computation http://www.parabon.com  United Devices http://www.uniteddevices.com/home.htm  DataSynapse http://www.datasynapse.com/  DCypher.net http://www.dcypher.net/