EOS Image Manager is a pure Cocoa application that enables users to quickly view, thumbnail, rename (add and remove chars, change case), and manage (move, copy, and rename) all of their images from a single, uncluttered interface. With this application users can organize thousands of downloaded images and digital photos in minutes.
The Noble Ape Simulation is a collection of a number of autonomous simulation components including a landscape simulation, biological simulation, weather simulation, sentient creature (Noble Ape) simulation, and a simple intelligent-agent scripting language (ApeScript). Noble Ape also contains a social simulation where the Noble Apes can be tracked in terms of social groups and also over many generations to explain social phenomenon to users looking to study this kind of interaction. It has been in development for more than a fifteen years.
FFView is a fast OpenGL-powered picture viewer a la ACDsee. It is aimed at letting you read manga or other comics onscreen (in either windowed or fullscreen mode). Its features include fast prefetching, smooth panning, voice commands, the ability to browse pictures inside archives (.rar/.cbr, .zip/.cbz) and persistent per-picture options.
Pixen is a sprite art program with many unique features. It is designed expressly for pixel art. To this end, it features extensive palette management and palette-swapping tools, a highly configurable grid overlay, a full complement of drawing tools, 'crosshairs' for ensuring proportion and straight lines, isometric line locking, extremely configurable backgrounds (for testing a sprite against various colors or images), and a full implementation of layers.