I use vi. I am tested EPIC and very much impressed with it. But I am good in vi and I don't need to change my habit.
I did asked this question to one perl newsgroup, in 2005. Here are some of the replies, these may help you, I can conclude that most of the guys use VI or EPIC
Reply: 1
check http://www.cpan.org/ports/index.html and there http://open-perl-ide.sourceforge.net/ I have used several years with success.

Reply: 2
Also try Epic (http://e-p-i-c.sourceforge.net/) which is a plug-in to Eclipse (http://www.eclipse.org/). Eclipse is the Open Source visual tooling project heavily backed by IBM. I've only just started trying it, having also used the Open Perl IDE for years, and so far it looks good.

Reply: 3
Also have a look at Eclipse with EPIC installed. It is very good. Eclipse http://www.eclipse.org/platform/ Epic http://e-p-i-c.sourceforge.net/ I also use Emacs on windows, which I like , but it doesn't offer as much as Eclipse/EPIC or Open Perl IDE hope this helps

Reply: 4
I have used www.context.cx for 4 years for ALL my perl, xml and javascript work. I tried out ActivePerl's Komodo and gave up and went back to conTEXT.

Reply 5:
vim

Reply 6:
I know its not free, but I use UltraEdit, primarily because it is able to automatically parse the code for subroutines, and display them in a sidebar. That really helps by giving me a rundown on the object's methods, and lets me jump to the method quickly (without doing text search). Something very similar to JCreator for Java. I will like to try the Open IDE, seeing that it has built-in debugging. But is it also able to parse subroutines/ methods automatically as well? I really need that.