Can the Signal protocol be used at own social networks? [closed]

I am a huge fan of www.signal.org and its excellent software. I actually now feel safe after some years with Facebook, disturbing my night sleep...

Just then I am wondering if it's possible to buy, or install/integrate the actual Signal Protocol and software so we can create our own safe messaging both at future social networks, and then also making a Messenger app, just like the excellent Signal app? (Facebook, WhatsApp, etc.)