RealBasic is a tool I have used to build GUI wrappers around my shell scripts. It can do what you want but it is not free at $99 for the Mac only version.

Alex Ruiz follows up his popular JavaOne 2007 presentation with this introduction to test-driven GUI development with FEST. Learn what differentiates FEST (formerly TestNG-Abbot) from other GUI ...

Electronic devices have found their way into nearly every aspect of daily life, from cellular phones, to DVD-Players and car navigation systems. Along with their growing capabilities and complexities ...

Express Logic has announced GUIX, a graphical user interface (GUI) development framework featuring a low-overhead runtime engine and development tool with automatic code generation, for embedded ...

This Xilinx® Spartan®-6 FPGA centric development kit is a complete solution for the development of user-friendly, responsive and cost-sensitive graphical user interfaces (GUIs) for embedded systems ...