mGSTEP is a software development framework designed primarily for use in embedded devices. It implements the core elements of NeXT's OpenStep that evolved into Apple's Cocoa Objective-C class libraries. The drawing API is a partial implementation of Display Postscript in parallel with the newer Core Graphics API. The stable GUI (AppKit) is X11 based. A Linux framebuffer based GUI backend is also included.
Hesperides is an adaptation for Mac OS X of Didier Willis' Dragon Flame, a dictionary for Sindarin (the grey-elven language, invented by J.R.R. Tolkien). It integrates Didier's Sindarin dictionary with a state-of-the-art interface and the Narmacil engine (to display the words using Tengwar).
LifeSaver is a Mac OS X screensaver that simulates Conway's game of life on screen. The starting configurations for the cells are randomly selected from predetermined configurations and from randomly generated configurations. MandelSaver is a Mac OS X screensaver that draws colorised Mandelbrot images on the screen. The position and coloration of the subset of the fractal displayed is randomly selected.
F-Script is a lightweight scripting layer specifically designed for the Mac OS X object system (i.e. Cocoa). It 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.
GNUSTEP Live CD contains a lot of software for GNUstep, a free implementation of the OPENSTEP framework (which is also directly used in Mac OS X as Cocoa). It includes excellent applications for RAD (GORM and ProjectCenter). The CD is available for i486, AMD64, Apple Mac PowerPC, and Sun UltraSPARC computers.