Lingvisto is a small X11 program that will help you to learn words from foreign languages. You can create your own lessons and test your knowledge afterwards. Lingvisto supports a variety of languages. If you want to learn a language that contains special characters (or your native language contains such characters) you have to install the corresponding X11-font into your font directory.
spim is a self-contained software simulator for running R2000/R3000 assembly language programs. It reads and can immediately execute files containing assembly language code. spim also provides a debugger and simple set of operating system services. spim provides both a simple, textual interface and a fancier, graphical interface. The package includes complete source code and documentation.