Laptop mapping software

I use Google Maps on a PC for planning. I can save routes to my Gmail account and use the route on my smartphone Google Maps for Mobile. As a backup, I use my vehicle's navigation, but the routes they pick generally do not match Google or what I pick.

The more valuable parts of using a smartphone app are the traffic information, quick lookup of local businesses, gas stations, restaurants, stores, etc, and even the phone number to click on to dial.