Hi Kevin,
It says so on this page:
http://zerenesystems.com/cms/stacker"What type of computer do I need?
Microsoft Windows®, Macintosh OS X®, or Linux®, and it doesn’t make much difference which one you have. The code base is about 98% identical. We recommend using a computer with a modern multi-core processor (e.g. Intel® Core™ 2) and at least 2 GB of memory. The software will run correctly on older and smaller machines, but processing will take longer and you may be limited to something less than the full resolution of your camera.
For Windows and Linux, separate installers are available for 32-bit and 64-bit versions. For Macintosh, the same application bundle runs in all environments.
If you need Zerene Stacker in another environment, please contact us."
Best regards
Erik
When I looked it up it showed Windows only. I'm happy to change it if does work on a MAc.
Kevin Raber