Afaik for both Parsec and Moonlight the video is a capture of the screen encoded in h264 or h265 and streamed to the remote client. They may be based on RDP for

Afaik for both Parsec and Moonlight the video is a capture of the screen encoded in h264 or h265 and streamed to the remote client. They may be based on RDP for input but I don't think that's the case. Moonlight is open-source, you can see in the code yourself as I don't understand most of it. There is also a project that attempt to replace the associated Nvidia Gamestream server but it is quite basic and no longer maintained : https://github.com/loki-47-6F-64/sunshine https://github.com/loki-47-6F-64/sunshine