DocFetcher is an Open Source desktop search application: It allows you to search the contents of files on your computer. — You can think of it as Google for your local files. The application runs on Windows, Linux and Mac OS X.
Pwim utilizes python to find through a given set of directories the string, or strings, that you meant to play. For example, 'pwim pick ice' will yeild you 'maison ikoku - The Pillows - ice pick.wmv' to be played with whatever media player of your choice.
ServicemarX allows you to easily discover, bookmark, and share network services. It extends Bonjour (formerly known as Rendezvous) by expanding its scope Internet-wide. ServicemarX also enables Tiger's Wide Area capabilities. (full source in CVS below)