http://perl.apache.org/docs/index.html
You can wrap your existing CGI scripts in it using
http://perl.apache.org/docs/2.0/api/ModPerl/Registry.html
so the transition can be rather smooth
For example: emacsformacosx.com was straight Perl CGI until about 2 weeks ago.
However, in recent years PSGI has started to become the standand in the community. As far as I know, it is modeled after Python's WSGI. All of the "major" perl web frameworks support it, the three big ones I can think of are Mojolicious[1], Dancer[2], and Catalyst[3].
1: https://metacpan.org/pod/Mojolicious
It's really nice, though. Try out Mojolicious::Lite asap!
Just very tiny tiny thing: those tables ought to be sortable, that would have been great. I will be looking around, thanks.
If you can't go to the modern frameworks, I quite like Dancer myself, you can get an ebook from O'Reilly (or used).
1: http://www.modernperlbooks.com/mt/2011/03/why-psgiplack-matt...
2: http://search.cpan.org/~miyagawa/PSGI-1.102/PSGI.pod
D'oh! Now I see below that your duplicate of this question got the love it deserved already...
If not for Perl Monks, my enthusiasm might have been lost midway.