I'm trying to find something like Google's Android messages, which has a web interface. I don't necessarily care about the web interface though. I'm much more interested in how Android messages manages to send and receive text messages from a computer. I'm looking for an app that exposes API to do that, so that I could hook it up to pidgin. The problem is that the ones I found (Pulse SMS, Pushbullet) are paid/have limited free functionality. I am ok with self-hosting; is there anything like what I'm trying to find?