Computers

Fortran 90 code by Paul Stevenson.

Archive of Fortran codes.

Calculates molecular properties with SCF, MP2, MCSCF or CC wave functions. The strengths of the program are mainly in the areas of magnetic and (frequency-dependent) electric properties, and for studies of molecular potential energy surfaces, both for static and dynamical investigations.

Computes numerical solutions to the Poisson-Boltzmann equation (both linear and nonlinear form) for molecules of arbitrary shape and charge distribution. Includes documentation, examples, and references. Source code may be requested via a form.

Fortran (and a bit of C) code for relativistic molecular calculations based on the Dirac-Coulomb Hamiltonian. Free for academic use.

By John Newman.

General ab-initio quantum chemistry package.

Fortran 90 program by Natalie Holzwarth to calculate the electronic energy and density for an atom using density functional theory. For a specified atomic configuration, the optimal electronic wavefunctions are calculated numerically. Designed for student use.

Ab-initio Fortran 90 programs for molecular electronic structure calculations, designed and maintained by H.-J. Werner and P. J. Knowles.

By N. Sathyamurthy.

The program atompaw generates projector and basis functions which are needed for performing electronic structure calculations based on the projector augmented wave (PAW) method. The pwpaw code is a plane wave implementation of the PAW method developed by Blochl for electronic structure calculations within the framework of density functional theory. By Natalie Holzwarth.

Codes by Kieran Lim for chemical dynamics, a vibrationally adiabatic impulsive dissociation model, Huckel orbital theory, calculation of gas-kinetic collision rate coefficients, and Monte Carlo quasiclassical trajectory simulation.

By Paul Stevenson, in Fortran 90.

Complete and general package for molecular mechanics and dynamics, with some special features for biopolymers.

Free package for doing theoretical chemistry calculations. Fortran 95 source files and the "foo" files used to generate them are provided. Foo is an object-oriented language created by the authors of the package.

Fortran 90 code to perform electronic structure calculations of solids using density functional theory (DFT). It is based on the full-potential (linearized) augmented plane-wave ((L)APW) + local orbitals (lo) method, among the most accurate schemes for band structure calculations. [Commercial]