I'm sure you are aware of Nitrokey. If not, here you go: https://www.nitrokey.com/
Looks like it's an online map editor/map viewer that supports both vector an raster images.
https://www.cnbc.com/2017/06/27/the-largest-fines-dished-out...
Seems perfectly reasonable to me.
They list Google as one of their customers.
Also if you're a Linux kernel developer you get one for free: https://www.nitrokey.com/news/2018/nitrokey-partners-linux-f...