TurfJS

Modular, simple-to-understand JavaScript functions that speak GeoJSON

there are so many cool tools today to do things with mapping. i remember how frustrating things were in the early days when playing with google maps and how that's rapidly changed with the development of lots of alternatives. I'm sure if you were making some kind of data app for your exercise data or even delivery service data (uber) etc this could be a cool tool.

i'd love for instance to be able to calculate some costings for time versus destinations including the transportation for like in-time freelancer costs.