Without any doubt Josh Barnes deserves the credit for the work that lies in front of you. Most of the visible parts, such as the user interface and the filestructure, were originally developed by Josh Barnes, in collaboration with Piet Hut and Peter Teuben at the Institute for Advanced Study during the 1986/87 academic year. At the initial stages of this project we have also benefitted from contributions by Lyman Hurd, Eric Roberts, Mark Ross, and Panayotis Skordis. You will also find many ideas originally developed in NEMO in derived and evolved products such as Starlab and ZENO.
Of course any package will only improve when it is used. Numerous people, in particular the University of Maryland graduate students and Stefano Casertano have suffered through several stages of testing. Without them and their complaints we would never be where we are now. Needless to say, we need more complaints! We would also like to express our sincere thanks to Sverre Aarseth, for his hard work on the industry standard series "NBODY*", which has also become a part of NEMO, and Lars Hernquist, for providing a fortran version of the treecode. Mark Bellon has contributed his optimized C version of treecode which specifically runs well on some parallel processors. The GIPSY and MIRIAD programming groups are also continuesly supplying us with software. Being one of the early guinea pigs of the C version of Numerical Recipes we have also benefitted from some code from Numerical Recipes Software. Finally, the Usenet public domain has proven to be of great value, and you will find several utilities in e.g. $NEMO/src/tools and $NEMO/usr/lib. There are too many to be all acknowledged at this place, the manual pages and/or source code will contain appropriate references.