If it is software you want, not an internet site, then you are pretty much out of luck. I used Delorme Street Atlas for years on my PC, but there really is nothing similar for the mac (unless someone has developed something and I have been kept in the dark) except for Route 66, and it is a really awful piece of software. Delorme used to support macs, but quit some years ago, sure wish they would start supporting again! We need an app like this!