CGoban 2
CGoban 2 is an SGF editor and client for the Kiseido Go Server written and maintained by William Shubert. It is distinct from an earlier program by the same author called CGoban.
CGoban 2 is available in several languages. It handles variations quite well. Annoyingly, it puts a "circle" mark on the current move, which can look odd when viewing the file in another program.
CGoban 2 is distributed free of charge at the
CGoban 2 download page. Be
aware that unlike CGoban, CGoban 2 is not
free software.