About a month ago there was a post about a route optimization program called ZRP. That post is in 3rd party software. I tried ZRP and found some issues and documented them in that thread. You can see it here.
https://www.tomtomforums.com/tomtom...aner-roundtrip-solver-route-optimization.html
https://www.tomtomforums.com/tomtom...aner-roundtrip-solver-route-optimization.html