You might have come across the same problem I have faced pretty often: You want to write a small snippet of code for a friend who's not into programming to solve some task. You want to use the scripting language of your choice (yeah, [Perl](http://www.perl.org/)). But for many people, especially Windows users, explaining them how to [install perl](http://www.perl.org/get.html), install some modules from [CPAN](http://cpan.org), and finally how to use the script from the command line is tedious and often takes more time than writing it in the first place. And sometimes it even takes more time than solving the task by hand which is quite frustrating. So I always wanted to build stand-alone applications with a GUI for those cases. But building GUIs is usually a huge pain in the ass, so I always avoided it; until I got the idea to build web applications with [Mojolicious](http://mojolicio.us/) as GUI. Building stand alone executables without the need of installing perl, modules, or libraries can be solved with [PAR-Packer](http://search.cpan.org/dist/PAR-Packer/). So far, that was just a thought. A few days ago I got a small task: My brother wanted an application to automatically correct one kind of systemic error in large data sets. So I wanted to put that idea to the test. It worked out quite well! Do you want to know more?