How would you like useful, open source tools that can be deployed once and only once (for everyone), and used freely (minus processing fees) forever without hav

How would you like useful, open source tools that can be deployed once and only once (for everyone), and used freely (minus processing fees) forever without having to worry about (a) deploying an instance of it on your own environment or (b) the service going down because the owner lost interest? Because smart contracts can do that. Pretty neat, huh?