A couple of weeks ago I released SaVi 1.5.0 for simulating satellite constellations.
SaVi has a few new tricks; it can load in satellite elsets from the web, and create animations of satellite movement.
And it was pleasing to find that SaVi can be made to work on Windows 10 (Anniversary developer edition) via its Ubuntu package. I've never learned to build Windows applications, and that no longer matters!
I've been working on and off with SaVi for twenty years, pretty much. Now, back to the occasional bugfixes.