Capture One PRO is available on the Windows® and Mac® platforms.
Windows:
Capture One runs on Windows 2000 and XP
Mac:
Capture One PRO is a Universal application for Mac, it runs natively on both PowerPC and Intel-based Macs.
Capture One runs on Mac OS X 10.3.9 or 10.4.x.
One software, two platforms!
With a purchase of Capture One PRO you can use it on both Windows and Mac computers without additional costs.