Perhaps because MAC users are not a big enough market to justify the development expense? Same reason there is little malware for mac. The market it too small to attract a lot of attention from malwar

It can be a little tricky keeping both Butel and Sentinal in sync. When you write to scanner with one, then read it back into the other before making changes with the other. When you write it back the

This may be what you want: https://www.microsoft.com/en-us/download/details.aspx?id=26. Bob