A Graphical Developement Environment based on a Basic Interpreter with object extensions.
Syllable Desktop is a complete operating system that is easy to use, powerful, lightweight and extraordinarily fast and responsive. It has its own kernel, filesystem, GUI and applications. Syllable Server is a matching small and efficient Linux server.
NetHack (and futurely Slash'EM) translated to the Portuguese language.
SummerCHAT is a light, simple chat program for GNU/Linux, text based. You just run a server in one computer, the clients connect to the server and start to talk. Written in C/C++ it's a great example of how to use ncurses, threads and the BSD sockets!