For the lucky owners of an Ettus gear, Matt KB1VC has developed a multi-mode VHF/UHF/Microwave radio transceiver that runs on Linux : SoDaRadio
All the details on https://kb1vc.github.io/SoDaRadio/
At my request, Matt has been kind enough to make a version for QO-100.
You will find it on https://github.com/kb1vc/SoDaRadio/tree/SatMode. No kit for this version, you will have to compile it.
Bonne bidouille we say in French.
73 Michel HB9DUG