Welcome to Zamboni! This is the current version of addons.mozilla.org, which rose from the ashes of Remora.
It's forged from (among other things) Django, Jinja2, elasticsearch, jQuery and a dash of love.
We have some good install docs if you want to try it out. We'd love your help! You can come talk to us on irc://irc.mozilla.org/amo if you have questions.
Subscribe to our newsletter by sending mail to zamboni@librelist.com.
If you like what we've done, you may want to check out Mozilla's Playdoh. We took all the cool stuff we did in AMO, SUMO and our other websites, and created a base template for new websites.