I spend a good deal of my time working at the command line. In fact I rarely use any other graphical applications than a web browser and an editor. I've found that it's often much quicker to do the task at hand on the command line than to use an interface which was primarily designed with mouse users in mind.
Postscript fractals are programs that generate fractals using the postscript engine in the printer (the printer is the renderer)
RiveScript is a simple scripting language for chatbots with a friendly, easy to learn syntax.
Piet is a programming language in which programs look like abstract paintings. The language is named after Piet Mondrian, who pioneered the field of geometric abstract art.
Un quine en informatique est un programme (une sorte de métaprogramme) dont la sortie et le code source sont identiques.