OpenStreetMap community
Everything #OpenStreetMap related is welcome: software releases, showing of your work, questions about how to tag something, as long as it has to do with OpenStreetMap or OpenStreetMap-related software.
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Join OpenStreetMap and start mapping: https://www.openstreetmap.org/.
There are many communication channels about OSM, many organized around a certain country or region. Discover them on https://openstreetmap.community/
https://mapcomplete.org/ is an easy-to-use website to view, edit and add points (such as shops, restaurants and others)
https://learnosm.org/en/ has a lot of information for beginners too.
There's usually two parts, the data tracker and the visualizer, and they often can be mixed and matched or come as a pair. The most common loggers are OwnTrack and GPSLogger
I used PhoneTrack (through NextCloud) for a bit. I think the great thing about it was you could edit points. If there was a stray data reading that was way off you could (re)move it.
Traccar comes as a server/client pair but this is more aligned for commercial vehicle tracking.
There's a really cool visualizer, Orion, but it's no longer maintained.
https://github.com/LINKIWI/orion-web
And the same for Time Travel Tracker.
https://github.com/redfish64/TinyTravelTracker
NextCloud has a PhoneTrack plugin