Loki: Los Alamos National Laboratory,
http://loki-www.lanl.gov/index.html
Hyglac and Naegling: Center for Advanced Computing Research,
California Institute of Technology,
http://www.cacr.caltech.edu/research/beowulf/
The Warren-Salmon Treecode:
http://qso.lanl.gov/papers/Papers.html
Grendel: Department of Electrical and Computer Engineering,
Clemson University,
http://ece.clemson.edu/parl/grendel.htm
Hrothgar: Drexel University,
http://einstein.drexel.edu/beowulf/Beowulf.html