: Highly capable for particle physics and available via the FLUKA website for academic use.
: Popular in reactor physics; it is free for non-commercial and educational use (requires a separate request process). Installing MCNP6.2 on Microsoft Windows mcnp62 download free
While it is widely used in nuclear engineering, medical physics, and radiation shielding, it is not available as a "free download" : Highly capable for particle physics and available
To legally obtain MCNP6.2, you must submit a formal request and pay a licensing fee to the Radiation Safety Information Computational Center (RSICC) at Oak Ridge National Laboratory. How to Request MCNP6.2 and radiation shielding
Runs on Windows, Linux, and macOS, with support for parallel execution using MPI. Installing MCNP6.2 on Microsoft Windows