Big Bang Chess 2.02
[Commercial $25] Mac OS X with 3D board, network play with Rendezvous [updated 10/19/2004]
Chessic 2.0
Freeware OSX interface for the Internet Chess Club (ICC) [updated 7/05/04]
ChessWorks
Multiplayer chess game that is playable over the internet or a LAN. Can be played on Mac OS 8 - 9, Mac OS X, and Windows operating systems.
Craig Knelsen's Online Chess Links
Links and descriptions for 11 sites by the author of Fixation 2.0.
Fixation
[freeware] Client which lets you access the ICC, FICS, USCL and chess.net chess servers. Carbonized to run both on OSX and earlier systems.
Fixation 1.41
[Freeware] Graphic interface for Internet chess servers. Does not require Power Macintosh.
Fixation Chess Sets
Traditional pieces you can use, with how-to.
Game Glutton
[Freeware] Play chess over a network, also against computer, other games.
Glyph Chess
[Freeware] Cross-platform network chess for OS/X, Windows 98+. Released Nov 2004.
HyperNetwork CHESS
[Shareware] Play computer, or humans via modem or network.
Internet Chess for Macintosh
Interface for the commercial "Internet Chess Club" server (ICC)
Jin
Java chess client for ICC and FICS, lets you save your games. OS X only, Version 2.12.1 released 7/21/2004.
MacICC
[Freeware] Beta version of a Mac interface for FICS
OTChess 1.5.2
[Shareware $5] [Download link] Peer-Peer internet chess game.
PowerICS
[Freeware] Graphical interface for the free internet chess servers.
Project Gridlock
Play chess between Macs on local networks or the Internet.