Linux
Tux has now become a symbol for Linux, and sometimes even for open source. He can be seen in many different places and often, when people refer to Linux, they often think about Tux. Tux has even been included in many video games, such as Super Tux (parody of Super Mario Bros.), Tux Racer (where players race Tux down an icy hill) and Pingus (like Lemmings).