iHook for Mac

From Research Systems Unix Group - University of Michigan:

iHook is a graphical frontend for any commandline executable. It gives scripts a pleasant Aqua face, and allows script writers to provide graphical feedback without having to learn one of the higher APIs available for Mac OS X.

iHook accomplishes this through its ability to understand a set of directives. When a script writes an iHook Directive to stdout, iHook will modify its own interface based on the content of the Directive. In this way, a simple shell script can have an Aqua interface, complete with a progress bar and drawer. iHook also integrates with the Security framework, and can run scripts with elevated privileges if the user provides a valid administrator name and password.

When launched in the Finder, iHook prompts the user to choose a script to run; iHook also accepts file drops on its icon, and will attempt to run the dropped file. iHook is highly useful as an interface for Mac OS X LogoutHooks.