NyonExplorer is an alternative frontend for Bosch Nyon owners. It uses raw data from https://www.ebike-connect.com. The application is not yet nearly feature complete - please feel free to request features.
Binary releases can be found here: https://github.com/cgiesche/ebikeconnect-gui/releases/latest
There are currently two versions:
ebikeconnect-gui-VERSION.zip A version that needs at least Java Runtime 1.8u77 correctly installed on your System. Extract zip file and run "ebikeconnect-gui-VERSION-jfx.jar".
ebikeconnect-gui-standalone-win64-VERSION.zip A version that brings it's own Java Runtime - but only for Windows (64 Bit) operating systems. Extract zip file and run "ebikeconnect-gui.exe".