I'm not exactly sure what Perl-based Webapp would require a client-installed code (after all, it's a webapp, right?). If you really need clients to run an executable on their computers, you can always try and use perl2exe ( http://www.indigostar.com/perl2exe.htm). Essentially, it combines Perl interpreter, needed modules, and the script into one executable that can be ran on machines that do not have Perl installed.