I’ve been using Perl Dancer for my personal webapps for a few years now, and am incredibly happy with it. I’ve also recently started deploying them with nginx+uwsgi, which (once you get the config right) is a great combination. I’ve recently been looking at what the equivalent would be in other popular languages. Since Dancer is inspired by Sinatra and most other languages have similarly inspired projects, it was a fairly simple list to put together.
The current(edit: not anymore) version of my website runs on a lightweight perl framework called Dancer. It’s easy to learn and avoids the massive weight of Catalyst, making it ideal for use in shared hosting (paying to get a VM just so you can install thousands of perl modules is not cool).