The code behind this site is a hand-crafted combination of Perl, and Javascript running upon a Debian GNU/Linux host.
The code may be obtained directly from the Mercurial repository which it is hosted in:
Highlights of the code include:
Once authenticated all credentials are cached, and appropriate nonces are used to prevent spoofing.
Because I anticipated a lot of interest at the end of the site's life I've made as much as possible of the site static. This is described in a little detail in the README file.