Jens Alfke

Murky is a user-friendly GUI client for managing repositories and source files on Mac OS X. It's open source, free to use and doesn't require the command-line interface, making it accessible to all levels of users.

Mooseyard networking library includes a BLIP protocol implementation for smooth communication between devices.

CDBStore is an open-source, high-speed, and easy-to-use library for persistent storage in Cocoa development. It is in the pre-alpha stage and has not been extensively tested or used in any released products.

MYUtilities is a free and open source pack of Objective-C utility code. This software is designed to help with Cocoa programming on Mac OS X.