Neatline and Google Maps API


I’m reading the Neatline installation documentation, which state that a Google Maps API is required. I have two questions:

  1. Does this mean that without the Google Maps integration Neatline won’t work at all?

  2. Are there any open source options instead of using Google Maps with Neatline? I read something about a Leaflet integration on the Twitters but I haven’t been able to find any installation/setup instructions.