CGoban 2
Includes an editor for SGF go files and a client for the Kiseido Go Server.
Complete Goban
Go program for Unix and X11. Local, internet or modem play, as well as .SGF-compatible record and replay.
GoKnot
GoKnot is an IGS telnet client and a Go player (playing locally against the GnuGo engine).
Jago
Java-Client, Internet Go Server client, a Smart Go Format go game viewer and a point to point go player.
Java Go Client
A java plug-in to run Go against a server.
The gGo client
gGo is a Go board, SGF editor, client for the Internet Go Server and an interface for playing with GNU Go. gGo is written in Java and available for Linux, OS X, OS/2 and Windows.