F-Script is a lightweight open-source scripting layer specifically designed for the Mac OS X object system (i.e. Cocoa). F-Script provides scripting and interactive access to Cocoa frameworks and custom Objective-C objects. It aims to be a useful and fun tool for both beginners and experts, allowing interactively exploring, testing and using Cocoa-based objects and frameworks.

Based on Smalltalk, F-Script provides a pure object-oriented environment that leverage Mac OS X technologies and includes significant innovations, like a high-level model for object manipulation and the most terrific object browser on earth! F-Script has been developed from scratch for the Objective-C object model. It is highly integrated with Cocoa and optimized for native access.