The GameOfGo Web-Ring: http://www.webring.org/cgi-bin/webring?ring=weiqi;list.

The GoTeachingLadder is a mustvisit place for people on the net and have less than 6 months substained playing experience.

SenseisLibrary is THE WIKI on '''GO / WEIQI / BADUK'''

Gobase http://gobase.org is a large repository of game records and articles.

There is also an active UseNet newsgroup news:rec.games.go (although it recently has been filled with crank posts).
----
Many '''free''' internet go servers exist, including
* Dragon Go Server: http://www.dragongoserver.net/ (turn based, for those who don't like to spend hours playing a game, yet want to play many games at the same time)
* Internet Go Server: http://www.pandanet.co.jp/English/
* KGS: http://www.gokgs.com/
* Legend Go Server: http://www.lgs.hinet.net/eng/
* see also http://senseis.xmp.net/?GoServers

Also there is a freeware go program, a 9x9 version of the ManyFacesOfGo available at
http://www.smart-games.com/igowin.html (but remember http://senseis.xmp.net/?IgowinIsBadForYourGame)

The OpenSource GnuGo is now on par with the commercial programs, and it has been ported to many platforms.  Downloads available from http://www.gnu.org/software/gnugo/gnugo.html. That page also has a number of Go related links.

For those people interested in an editor/viewer for go games (which can also let the user play against GnuGo), there is a decent freeware at
http://www.ruijiang.com/multigo/

See also GoOnLinux.
-----
CategoryEasternThought CategoryGame