The Classic FullProf Suite distribution has been simplified: now the new Intel Fortran compiler (ifx) is exclusively used. Users are encouraged to report any issues so that the corresponding executable can be fixed promptly.
There is also available a new tool for automated Rietveld analysis of powder diffraction patterns using FullProf as refinement engine, the FullProfApp. This tool requires a previous installation of the Classic FullProf Suite and it is designed to easily handle large chunks of diffraction data generated by high-throughput screening (HTS) experiments as well as by in situ and operando studies at large user facilities such as Synchrotron and Neutron sources.
Installation instructions for the FullProf Suite: https://fpsuite-doc.readthedocs.io/en/latest/pages/installation/installation.html
Installation instructions for the FullProfApp: https://fullprofapp.readthedocs.io/en/stable/
What is new in the classic FullProf Suite: https://www.ill.eu/sites/fullprof/Old_FP/php/FullProf_News.htm