Instructions for downloading and installing PGOPHER software (updated 26 October 2026). The files are available at the bottom of this page.

The recent software changes have been implemented by Dr Cyril Richard (CNRS-Universite Bourgogne-Europe) so that PGOPHER can be successfully compiled on modern operating systems. No changes have been made to the core code that computes molecular spectra, and numerous tests have been performed to verify that the new codes continue to perform correctly. Nevertheless, users are encouraged to test the outputs from the new version against PGOPHER simulations using older versions of the code to satisfy themselves that the results are unchanged. Please report any problems to Dr Cyril Richard. A GitLab site is in development for the future management of the code and for community-led developments.

Windows: Two options are available:

Installer: Download and run PGOPHER-10.2.0-x64.msi. The installer adds PGOPHER to the Start menu and associates .pgo files with it.

Standalone version: Download the ZIP archive containing the standalone executable (.exe). Extract the archive and run the executable directly, without needing to install PGOPHER.

The first time you run PGOPHER, Windows may display a "Windows protected your PC" warning. Click "More info", then "Run anyway".

macOS (Apple Silicon only): Download PGOPHER-10.2.0.dmg, open it, and drag PGOPHER into the Applications folder.

PGOPHER requires newer Macs equipped with Apple Silicon processors (M1, M2, M3, M4 and later). Intel-based Macs are no longer supported, as Apple is phasing out this architecture.

Because the application is not yet signed by Apple, macOS may refuse to open it the first time, warning that it cannot verify the application. This does not mean that it is damaged. Click "Done", then open System Settings - Privacy & Security, scroll down and click "Open Anyway". This is only required once.

Linux (64-bit only): Download the Linux ZIP archive containing the standalone executables. Extract the archive and run the appropriate executable directly, without installation or compilation from source.

Only 64-bit Linux systems are supported.