GAMESS (US)
| Developer(s) | Iowa State University Quantum Chemistry Group |
|---|---|
| Initial release | 1 October 1977 |
| Stable release | Apr 20, 2017
/ April 20, 2017 |
| Written in | FORTRAN 77, C |
| Operating system | Windows; Unix, Unix-like: Linux, FreeBSD, Mac OS X |
| Available in | English |
| Type | Computational chemistry |
| License | Proprietary freeware |
| Website | www |
General Atomic and Molecular Electronic Structure System (GAMESS (US)) is computer software for computational chemistry. The original code started on October 1, 1977 as a National Resources for Computations in Chemistry project. In 1981, the code base split into GAMESS (US) and GAMESS (UK) variants, which now differ significantly. GAMESS (US) is maintained by the members of the Gordon Research Group at Iowa State University. GAMESS (US) source code is available as source-available freeware, but is not open-source software, due to license restrictions.