Downloading profex 3.4.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. Profex for Mac lies within Productivity Tools, more precisely Office Tools.
This free Mac application was originally created by Nicola Döbelin. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
Profex is a graphical user interface for Rietveld refinement of powder X-ray diffraction data. It supports two different Rietveld backends: BGMN and FullProf.2k. The application reads and displays diffraction patterns from various file formats (RAW data formats of Bruker, PANalytical, Rigaku, Seifert, Stoe, and generic text formats).
You may want to check out more Mac applications, such as PitStop Extreme or FileOpenInstaller, which might be similar to profex.