I'm a heavy user of the ActiveState KOMODO IDE. There is a free version to try and I think it works very well (not only for Perl, but also for XML, XSLT, HTML, PHP, ...).

It integrates the PERL-debugger and shows your output in a scrollable window.

CountZero

"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law