You may wish to look into NixOS or GNU Guix as taking the same ideas to the logical conclusion, or stal/ix which aspires to take a more traditional approach and in that way is perhaps closer to Gobo. All three are very much alive and actively maintained, even thriving by some metrics.

I haven’t used it in a while, but I think it just sends you an SMS with a code that you can enter manually, so yeah it works on devices without a SIM

I think you should still pass --cmd to it, no?

I think it depends a lot on where you are. Where I am, the government (kinda unofficially) provides excellent quality (<10 cm/px in some cities, and <50cm/px for the entire country) orthographically adjusted aerial imaging, that’s a lot better than any commercial solution.

Does not seem to cache the satellite tiles for usage offline.

Did you use the “Download Map” option? It definitely works offline for me after I download it.

OsmAnd does support this now. You need to activate the overlay/underlay you want to download, press&hold anywhere on the map, then in the menu do Actions > Download Map.

OsmAnd does support this. You need to activate the overlay/underlay you want to download, press&hold anywhere on the map, then in the menu do Actions > Download Map.

Hey, you can add the satellite imagery you need by doing Configure Map > Underlay > Underlay map > Add more. Then you can select the imagery you just added from that same menu.

After you’ve selected the underlay map, you can pre-download the images for offline use by viewing the part of the map you want to download, touching&holding anywhere on it, then doing Actions > Download Map.

Hope that helps.