FICS - Free Internet Chess Server
This is a free chess server!
FICS is a good chess server for not only normal chess, but chess variants as well - including the favourite amongst NSWJCL members - transfer! It is free and probably the best choice among all of the servers.
To play on this server, you must download one of the FICS client interfaces. There are many to choose from - the most common being WinBoard or Thief.
Please contact me at email@example.com if there are any mistakes or new servers you would like me to add to this list.