Repeater-START (Showing The Amateur Repeaters Tool) is an app to view nearby ham radio repeaters.
It runs on Windows, Android, Ubuntu Linux and Raspbian for Raspberry-pi, Librem Phone, Pinephone/Manjaro Linux etc.
Library for OpenStreetMap offline rendering and routing
libosmscout offers applications simple, high-level interfaces to offline rendering and routing functionalities based on OpenStreetMap data. It does so by preprocessing *.osm data files and generating binary data and index files for fast access.