Nextnav

https://docs.fcc.gov/public/attachments/DA-24-776A1.txt

There’s already a startup trying to get the FCC to give them half of the 915mhz band (meshtastic, smart home stuff, ELRS, ham radio) for a pay to win GPS alternative.

Blue marble is essentially an open source Google Earth desktop application. Idk if it’s exactly what you want but it’s not terrible.

OsmAnd is the same thing for Android and iOS and it’s absolutely wonderful.