jLogo is a LOGO interpreter, featuring as many turtles as you want, color graphics, graphical text tools, and multichannel sound. It is available in French and English.
MacEyesX is a tiny app which features two big eyes
which follow any movement of your mouse, even when
you are navigating through menus. It is
essentially a clone of Xeyes for MacOS X.
A tool for securing DNS communications between a client and a DNS resolver.
A polyhedral extraction tool (PET).