The Zenith Satellite Tracker is a free, simple to use, web-based applications for tracking all current satellites that provide satellite communications between amateur radio operators. It contains special features for “rovers” and coordination with “friends”.

The “off-line” version enables operation of your station’s radio and rotor. However, unlike other applications, this version requires you to host the web-app on a local host that connects to your radio and rotor. Fortunately, the host can be as simple as a Raspberry Pi.

Information can be found at: https://zenithtracker.org/