| [CheMPS2](https://github.com/SebWouters/CheMPS2) | CheMPS2 is a scientific library which contains a spin-adapted implementation of the density matrix renormalization group (DMRG) for ab initio quantum chemistry. |
| [ChronusQ](https://github.com/liresearchgroup/chronusq_public) | ChronusQ is a high-performance computational chemistry software package with a strong emphasis on explicitly time-dependent and post-SCF quantum mechanical methods. |
| [CP2K](http://www.cp2k.org/) | CP2K is a freely available (GPL) program, written in Fortran 95, to perform atomistic and molecular simulations of solid state, liquid, molecular and biological systems. It provides a general framework for different methods such as e.g. density functional theory (DFT) using a mixed Gaussian and plane waves approach (GPW), and classical pair and many-body potentials. |
| DIRAC | Old module, description not available. |
| [LAMMPS](http://lammps.sandia.gov) | LAMMPS is a classical molecular dynamics code, and an acronym for Large-scale Atomic/Molecular Massively Parallel Simulator. Has potentials for solid-state materials (metals, semiconductors) and soft matter (biomolecules, polymers) and coarse-grained or mesoscopic systems. It can be used to model atoms or, more generically, as a parallel particle simulator at the atomic, meso, or continuum scale. |
| [libctl](http://ab-initio.mit.edu/libctl) | libctl is a free Guile-based library implementing flexible control files for scientific simulations. |
| [Libint](https://sourceforge.net/p/libint/) | Libint library is used to evaluate the traditional (electron repulsion) and certain novel two-body matrix elements (integrals) over Cartesian Gaussian functions used in modern atomic and molecular theory. |
