Two possible answers for your inquiry. One of our customers a few years ago created an Export File and had it imported into Mappoint. When a sales rep was to visit a certain territory - all customers & prospects were displayed. At that time it was printed and given to the sales representative. We have not explored any other options with Mappoint.
For Synergy, we created some additional sql tables and some asp pages (could be easily modified to work with Synergy Enterprise) to enter in a starting zip code and have all accounts which you could specify (customers / prospects) show up within a certain mileage with details that you would select. This was to help a customer support staff to quickly find resellers or customers close to a person while on the phone with them. With a small modification, we can provide this information after viewing into an excel spreadsheet format.
I have a website link to to view the ASP Page application.