Platypus is a developer tool for the Mac OS X operating system. 


It can be used to create native, flawlessly integrated Mac OS X 
applications from interpreted scripts such as shell scripts or 
Perl and Python programs. This is done by wrapping the script in 
an application bundle directory structure along with an executable 
binary that runs the script.

Platypus makes it easy for you to share your scripts and programs 
with those unfamiliar with the command line interface, without any 
knowledge of the Mac OS X APIs -- a few clicks and you will have 
your own Mac OS X graphical program. Creating installers, maintenance 
applications, login items, launchers, automations and droplets is 
very easy using Platypus.