X Application Server System (XASS) allows for the creation of 'application servers' and clients which request that applications be run on a server but displayed locally. Servers can be queried for an application or services can be broadcasted. Authentication is provided, and applications are run as the user who requested them, although this is configurable. It allows applications to be served in heterogeneous, load-balanced, or distributed environments.
ZThread is an advanced object-oriented threading and synchronization library, implemented in C++ for POSIX, MacOS, and Win32 systems. It provides an excellent and powerful abstraction from native threads. It includes interruptible thread objects and several other synchronization control objects.
Cuppa is a cute application for Mac OS X to time your cup of tea as it steeps. Use it right from the dock: just right-click or command-click on the little teacup, and select the beverage you wish to brew. You'll see a tea bag appear in the cup, and gradually darken as the tea steeps. When the tea is done, the teacup will bounce and make a sound.