For Emacs users, Devel::PerlySense may be helpful. Helps with:

• Documentation of classes, methods
• Navigation to classes, base classes, methods, corresponding files
• Run tests, with assistance (sync test count)
• On-the-fly syntax and Perl::Critic check displayed in the source
• Code coverage displayed in the source
• Perl Regexp assistant
• ... and other smaller things

Works on Windows and Unix.

Even without Devel::PerlySense, Emacs already has syntax highlighting and indentation, a visual frontend to the Perl debugger, really nice integration with your version control system, ctags, the best diff/merge feature I've ever used, remote editing, etc. etc. So it's a quite capable package.

I'm not encouraging you to switch to Emacs or anything (it's got quite a daunting learning curve), but if you already use Emacs, make sure you explore all the brilliant tools it has accumulated over the years. Well, decades.