Surf these sites: Aarseth''s N-body software -- [open source - multiplatform] Direct N-body algorithms. Barnes & Hut Treecode Algorithm -- [open source - multiplatform] A guide to a tree code algorithm implementation, used for astronomical N-body simulations. CFD codes list -- A large list of commercial, public-domain and shareware codes. N-Body Simulation Methods -- This site keeps track of the various methods used in simulating n-body systems NEMO -- [open source - Unix] An extendible stellar dynamics toolbox; has various programs to create, integrate, analyze and visualize N-body and SPH-like systems. In addition there are various tools to operate on images, tables and orbits, including FITS files to export/import to/from other astronomical data reduction packages. TIPSY -- [open source - Unix] A data visualization package designed to quickly display and analyze the results of N-body simulations.
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