Hillbilly, years ago I had some Delorme programs for an old Mac, so I just assumed Delorme offered a current Mac version of "Street Atlas 2003". When checked its website earlier, tho, if I was reading correctly, it stated "Street Atlas 2003" supports only the Windows platform. At another spot I found wording to effect that not all Delorme programs support the Mac platform; to check specifically for those which do; yet I could never find any info as to which of its programs are Mac compatible. So I just don’t know which of its programs fit that category, but don’t believe "Street Atlas 2003" does. Know I’m surely far from the world’s best (more like the world’s worst) when it comes to anything computer and internet related, but also don’t believe Delorme has the world’s best (or most user friendly) website.