COSMICS
Cosmological initial conditions and microwave anisotropy codes for cosmological modelling. COSMICS is a package of fortran-77 programs. http://arcturus.mit.edu/cosmics/
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. http://bima.astro.umd.edu/nemo/
Stellar Astrophysics Software
[open source - Windows] Various programs for stellar astrophysics. Includes CHANDRA stellar structure software for collapsed objects including rotating white dwarfs and neutron stars, and STARCAL for nuclear astrophysics and the stellar structure of main sequence stars with supernova forecasting. http://grnwd.tripod.com/thelostchord.html