How do I download application on a Mac

Hi, I need to download this application for work and have a client requesting we use your software, however I have a MacBook Air and can't seem to download it. Can you help?

Sorry, we do not have a Mac version.

Though reportedly, WinSCP can be run on Mac under Wine.
https://appdb.winehq.org/objectManager.php?sClass=application&iId=1285