Software programmed in Fortran

Chemistry at Harvard Macromolecular Mechanics (CHARMM) is the name of a widely used set of force fields for molecular dynamics, and the name for the molecular dynamics simulation and analysis computer software package associated with them. The CHARMM Development Project involves a worldwide network of developers working with Martin Karplus and his group at Harvard to develop and maintain the CHARMM program. Licenses for this software are available, for a fee, to people and groups working in academia.

software package for simulating nuclear processes

thumb|right|AMBER is used to minimize the bond stretching energy of this ethane molecule.

Computing aphorism

FLUKA (an acronym for Fluktuierende Kaskade) is a fully integrated Monte Carlo simulation package for the interaction and transport of particles and nuclei in matter. FLUKA has many applications in particle physics, high energy experimental physics and engineering, shielding, detector and telescope design, cosmic ray studies, dosimetry, medical physics, radiobiology. A recent line of development concerns hadron therapy. As of 2022 FLUKA allowed simulation of interactions of photons with energy 100 eV and above.