$work pays for Komodo IDE currently. Targets for all major platforms (Linux, Win, OSX) are nice. I'll probably cough the $250 for it when I leave this job. You can play with Komodo Edit to see if you like the editor. The IDE adds debugging and whatnot.
Perlbrew (Linux) and ActiveState perl (Windows) and Git round out my small collection of tools. Perlbrew is somewhat annoying to get set up as it's *JUST PERL*, with few other modules compiled that I've found. So when you need something like DBI, you have to install headers for the DBDs to be compiled.