Thank you for your interest in Data Desk RP (8.2.1). Please select the appropriate version for your operating system. Data Desk RP for Mac runs on OS X 10.9, all the way up to 11.x. Data Desk RP for Windows can be used with computers running Win 7, Win 8 and Win 10. Data Desk is a 64-bit application, please ensure you have a 64-bit operating system.