Graphhopper VS Traccar

Well I think what he means is that we dropped the explicit support of Android and the example app with offline maps (Mapsforge), see this issue: https://github.com/graphhopper/graphhopper/issues/1940

But offline routing should still work on Android. But as you need JDK 1.8 support this will exclude a few older Android versions and devices, I think.

Graphhopper. It has an Android client that uses its web service. You can also try out the web app.

This is now fixed and deployed. See the route here and the specific fixed examples here. Note that you can still find the dangerous spots via clicking the "stop" icon below the route information multiple times. But this is likely a result of the bad cycling infrastruture as cycle.travel contains these short dangerous parts too and if you do such longer routes for Germany it does not happen.

I'd suggest refactoring to use a self hosted version of Graphhopper (https://www.graphhopper.com/open-source/ - they have a docker image you can use and pass in an OSM file to build a graph on) or OpenRouteService to limit your cost exposure to google.

Open Source. The routing server is open source too and geocoding too.

Valhalla is great (I've contributed a few patches and run it for a while)!

Also check:

http://project-osrm.org/

https://www.graphhopper.com/open-source/

if you attached a geolocation to each meeting that should be possible. either using the google maps API or a self-hosted graphHopper instance

I just improved the documentation for the map matching a bit. Maybe this also helps a bit.

I use https://www.traccar.org/ 👍

I suggest traccar - https://www.traccar.org/, open source and it's already complete with a server and web interface. Now you need a gps device, one that's supported by traccar - https://www.traccar.org/devices/. I suggest getting one that's capable of making http requests because it's easier to integrate with traccar (for this you'll need a sim card with data), compared to going with an SMS route where you need a way for your server to receive SMS texts.

Traccar I'm not as familiar with but seems like a promising vehicular oriented one https://www.traccar.org/

Spotlight on Traccar, a self-hosted, open-source platform for GPS device tracking

Open source GPS tracking platform - Traccar (https://www.traccar.org/). I think picking a small B2B niche is the best way to become successful. You're not going to be super rich, but you can have a good stable lifestyle business.

Since your title contains "Real-time" I assume gagamit kayo ng GPS, then might I also suggest traccar, https://www.traccar.org/, complete with server and client, easily integrated with OpenStreetMap