1. ASCI DoE Advanced Simulation and Computing Program. http://www.lanl.gov/asci.
2. Biomedical informatics research network BIRN grid. http://www.nbirn.net.
3. Cactus grid computational toolkit. http://www.globus.org.
4. Common component architecture. http://www.cca-forum.org.
5. European grid application toolkit and testbed. http://www.gridlab.org.