Photon by Komoot. This extension powers the online search function and the translation from location coordinates to human friendly place names in the app.
download photon_data from https://download1.graphhopper.com/public/extracts/by-country-code
you may need to run sudo apt install bzip2
example:
wget -O photon_data.tar.bz2 https://download1.graphhopper.com/public/extracts/by-country-code/bo/photon-db-bo-latest.tar.bz2
tar -xf photon_data.tar.bz2