JJOS is part of the JOS Project. It is a free and open Java-based operating system. It combines the jJOS kernel and decaf virtual machine.
KnightSleuth is a tool for Calvin College students to obtain and search the contact information of other students and faculty/staff. It allows more powerful searches than the websearch, such as by floor, by phone number, by home city, etc.
A portable operating system based on the java virtual machine.
kissme is a free (GPLed) Java Virtual Machine. It is being developed on GNU/Linux and can run console java applications. kissme is to be used with the GNU Classpath java class library. kissme also provides support for orthogonally persistent java.