I have been using this program for several years on Windows and have a lot of data in it. I was unable to find a similar program for Mac. When I learned of Cross Over, I decided to try it. After installing Cross Over, I loaded EZ Claim and imported all of the data. I've only been using EZ Claim on my Mac for about 2 weeks, but other than the font, it works exactly the same as it did on my PC. So far, no problems. I am very grateful that this is the case. Thank you.