Remote Apps Webpage
For years every installation of Sun's Java runtime environment for Windows has included a Java WebApp tool. The tool goes to this page and installs the Java apps (.jnlp) referenced here. The page includes the developers email address in the footer; it's not very fancy.
It seems like an irresistible target for hackers. I hope that server is awfully secure.
I tried seeing what the apps do nowadays. When I checked years ago they were worthless toys. It takes a very long time to install them now ...