Downloading CrystalDiffract 6.8.5 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. The application lies within Education Tools, more precisely Science.
The actual developer of this software for Mac is CrystalMaker Software. 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:
CrystalDiffract can simulate and visualize diffraction patterns from any CrystalMaker binary file. You can manipulate patterns in real time, with extensive control over all aspects of the diffraction experiment - plus the ability to edit site occupancies and lattice parameters. CrystalDiffract lets you display multiple diffraction patterns (simulated and real) in the same window.
You may want to check out more Mac applications, such as LabAssistant, Schematics Plus or MoonMenu, which might be similar to CrystalDiffract.
Science Tools