The Debian Project is an association of individuals who have made common cause to create a free operating system: a complete set of programs and utilities that make your computer run, plus applications to run on it. This operating system that we have created is called Debian GNU/Linux because of its basic building blocks: the Linux Kernel and the GNU OS tools. We simply call it Debian for short. Debian and its derivatives together make up the most popular Linux family in the world, used on systems all the way up from tiny embedded devices to world-class supercomputers.

See http://wiki.debian.org/SummerOfCode2009/StudentApplicationTemplate for the template.