Linutux/PlainChess
PlainChess aims to be a simple yet full–featured and beautiful alternative to all the cluttered chess portals currently existing. Its primary goal is to allow two persons to play a round of chess, no matter whether they happen to be at the same location or on a different continent. It's designed to be platform independent and to run on every computer or smart phone running a modern web browser and thus enabling people everywhere around the globe to play chess, at home and on the go.