Macintosh System Requirements
Igor Pro 7 runs on Mac OS X 10.9 or later.
Windows System Requirements
Igor Pro 7 runs on Windows 7 or later.
Igor Pro and Linux
At the present time Igor does not run under Linux.
Some users have had some success running Igor via Wine and via CodeWeavers' CrossOver Office Wine-based product. You can read about their experiences by searching the Igor mailing list database for "Linux" or you can view a summary in the Are you porting Igor to Linux? article in the support database.