Nothing for the Mac unless you run VMWare or Parallels and run a copy of S&T on it. Route 66 is a Mac solution but it hasn't been updates in many years.
Tzus, thanks for the lead to AB Navigator! I checked out their web site which indicated that getting an actual map illustrating driving directions required going online to Mapquest or other map provider. I suffer with a sloooow dial up seldom getting more than 28 kbs so I would prefer a program that generates maps offline like S & T or the Delorme product. The fact that AB Navigator is freeware is enticing, though!
DeLorme dropped support of Macs several years ago, citing the cost of a port to the Mac. I found this out after I bought my first Mac Mini. Really a shame, since DeLorme made such great maps!