BOINC development originated with a team based at the Space Sciences Laboratory (SSL) at the University of California, Berkeley and led by David Anderson, who also leads SETI@home. As a high-performance distributed computing platform, BOINC brings together about 137,805 active participants and 791,443 active computers (hosts) worldwide processing on average 41.548 PetaFLOPS (it would be the fifth largest processing capability in the world compared with an individual supercomputer Supercomputer TOP500 list). The National Science Foundation (NSF) funds BOINC through awards SCI/0221529, SCI/0438443 and SCI/0721124. "Guinness World Records" ranks BOINC as the largest computing grid in the world.