You don't even need a computer. I use the Android app to send files to another phone or tablet with the computer switched off. I can control media playing on a

You don't even need a computer. I use the Android app to send files to another phone or tablet with the computer switched off. I can control media playing on a tablet from my phone, ring a device to find it, share browser tabs. On my Ubuntu I'm using gsconnect which implements the same protocol.