XEMPIM is a complete rewrite of EMPIM (the Excessively Modular Personal Information Manager) for Mac OS X. It is written in Objective C/Cocoa to provide maximum compatibility with the OS X environment. The goal of (X)EMPIM is to create a core program which implements methods for loading, unloading, displaying, and communication between autonomous dynamically loadable modules. Each module provides a separate aspect of a standard PIM (Contact List, Calendar, etc).
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.
X Resource Graph (XRG) is a system monitor that shows graphs for CPU usage, memory usage, battery status, machine temperature, network usage, disk usage, current weather, and stock market data. It is designed to use as little overhead possible while showing a lot of information about the resource usage in a nice interface.
XShelf is an application that enhances Drag and Drop operations in MacOS X by providing a shelf where drag-and-dropped items (such as files, text, or URLs) can be stored for later use. Thus, not only can Drag and Drop operations be "paused", multiple operations can be in flight at once. It is the spiritual heir to the NeXT Shelf.