Toga II is a chess program, derivative of Fruit created by Thomas Gaksch. It has more chess knowledge and perhaps a better search algorithm. It is based on Fruit 2.1 and is free.
SAT (Simple scAnning Tool) is a simple and fast network scanner written in Python progamming language. It is used to identify network devices and services. The identification is based on recieved data such as banners.
WiredX is an X Window System server written in pure Java(tm). WiredX enables you to access UNIX/X applications from all web browsers with Java Plug-in. WiredX accepts X window protocols directly, so you don't need any proxy program. Its "beta" and "Lite" versions are available for non-commercial/commercial use without fee.
SpamDistiller is a program which automatically filters all incoming email directly on your mail server so that you never have to download large quantities of spam and/or virus infected email.