Generic Universal Boardgame  
   Play almost any board game: backgammon and checkers pieces are available or you can create your own. (Requires Java 2)
   http://ludo.iwarp.com/

Do'SSi Zo'la  
   One or two player opponent blocker for Windows or Linux. [Open Source, GPL]
   http://dossizola.sourceforge.net/

Cats and Ladders  
   One or two player board game for Windows.
   http://www.groan-zone.net/delphi/candl2.html

PegSol  
   Remove all the pegs except the last, which should be left in the center of the board. This Windows version includes a solution finder.
   http://www.extrabit.com/freestuff/

Valvo  
   Board game for Windows in which you race an opponent and try to block her good moves by opening and closing valves.
   http://familygames.com/free/valvo.html

Colossus  
   Clone of 'Titan' for Java in which legions move over large map recruiting minions before meeting on the battle board to fight. [Open Source, GPL]
   http://www.coiinc.com/people/guerrero/

Space Monopoly  
   A simple logical game of buying and selling shares. Requires Windows.
   http://space.monopoly.iwarp.com/

Expert Backgammon  
   Flexible backgammon game for Java with internet play and computer analysis of moves.
   http://www.lpsci.com/software/html/backdesc.html

Gipf for One  
   Network players on Linux or Windows introduce one piece into play until achieving four-in-a-row. [Open Source, GPL]
   http://gf1.sourceforge.net/

Tenes Empanadas Graciela  
   A clone of the Risk, the turn-based multiplayer strategy game for Linux.
   http://teg.sourceforge.net/

Happy End  
   Othello variant for Windows that allows you to play the end games of thousands of real matches played by world-level champions. Features several board designs and statistics reports.
   http://www.fngo.it/happyend.asp

Ludo  
   Customizable Windows version from India for up to four players.
   http://www.geocities.com/hirak_99/goodies/ludo.html

Desdemona  
   Small Othello game for GNU/Linux or Solaris.
   http://hobbe.lub.lu.se/~bjorn/othello.html

Civil War  
   DOS board game by Paul Spangler.
   http://pages.prodigy.net/ts42/CivilWar/

Dara  
   A Windows version of the African game of Mancala.
   http://www.rekenwonder.com/dara.htm

Hex  
   A two player strategy board game for windows in which the object is to connect two sides of the board with your tiles.
   http://www.rekenwonder.com/hex.htm

Shogi Variants  
   Windows program to play the Japanese member of the chess family of games or one of 16 other ancient and modern Shogi variants.
   http://www.netspace.net.au/~trout/

Shocky  
   Shogi playing program and programming API for Windows and Linux.
   http://www.cs.helsinki.fi/u/pmturune/Shocky_e.html

Automotive Conservation  
   Interactive game for Windows or Macintosh by Ford Motors to educate consumers about both environmental issues and automotive maintenance.
   http://www.automotiveconservation.com/home.shtml

Monopolie  
   Clone of the original board game Monopoly for Windows. It includes property, chance, and community chest cards as well as sound effects. [Open Source, GPL]
   http://monopolie.sourceforge.net/

Reverse  
   Othello against a friend or one of four levels of AI. The Windows graphics can be customized with themes.
   http://www.ncdgames.com/downloads_r.shtml

Batalla Naval  
   Networked, multiplayer battleship game for Gnome.
   http://batnav.sourceforge.net/batnav-en.html

HB Othello  
   The popular board game for Windows featuring computer opponents with multiple difficulty levels.
   http://www.hbteng.com/Prod06.htm

GNMM  
   Gnome version of Nine Mens Morris with an AI opponent, rule and board options, and support for both console and GUI play. (Open Source, GPL)
   http://gnmm.sourceforge.net/

KhunPhan  
   Includes downloads, links, and introduction for a 3D alignment game based on a Thai legend. Linux and Windows versions are available.
   http://geocities.com/khunphangame/

Qianhong Xiangqi  
   Includes screenshots and downloads. [Windows]
   http://www.angelfire.com/oz/xiangqi/

Mountain Vista Software  
   A battleship game. [Windows]
   http://www.mountainvistasoft.com/