qGo

qGo is a computerized board on which you can play the game of Go against another player, view and edit smart-go files, and connect to Go servers on the internet. It can also interface with computer Go programs such as GNU Go that speak the Go modem protocol. Have a look at the cgoban package if you are interested in a Go client with less package dependencies.

See description of the gnugo package for a short description of the game.