Diceridoo  
   Online dice game that tracks high scores.
   http://www.pimpernel.com/diceridoo/

Yahtzree  
   Variant of the classic game of yahtzee that is written in Java
   http://www.eeaston.com/YahtzREE/

Jahtzee / Webdice  
   Online dice game that tracks and compares high scores with other players from around the world.
   http://www.webdice.org

Triple Quintzee  
   Java implementation of a Triple Yahtzee variant.
   http://scv.bu.edu/~aarondf/java/quintzee.html

Yahtzee WebGame  
   Javascript version of Yahtzee.
   http://www.irt.org/games/js/yahtzee/

Roll 'Em!  
   An online Yahtzee-style game written in Javascript featuring the Catherine Wheel.
   http://www.notalot.com/cwville/roll-em.htm

Maxi Yahtzee  
   Yahtzee and many other free online games and casino games.
   http://www.gamesandcasino.com/MaxYPE/

Paine's Yahtzee  
   A nice javascript version of Yahtzee.
   http://www.keithpaine.co.uk/yahtzee/yahtzee.htm

Gord's Yahtzee  
   A java version of Yahtzee that works well.
   http://home.teleport.com/~gord/java/yahtzee/

Yahtzee Clone  
   A flash version of a Yahtzee clone.
   http://www.publijuegos.com/flash/ayatzeeclone.htm

Rekenwonder  
   Javascript version of the popular dice game
   http://www.rekenwonder.com/yahtzee/yahtzee.htm

Yahtzee in Flash by EyeGrid  
   EyeGrid webservices has some fun games for you.
   http://www.EyeGrid.com/yahtzee/yahtzee.htm

JavaScript Yahtzee  
   Yahtzee dice game using client-side JavaScript.
   http://www.alchemica.co.uk/games/yahtzee/

Five-O  
   Yahtzee type dice game written in Java.
   http://www.fwend.com/five0.htm

Javascript Yahtzee by xDev Design Interactive  
   A Javascript/DHTML Yahtzee game that is similar in functionality to the electronic hand-held version.
   http://www.xdevdesign.com/yahtzee/index.html

Java Yahtzee  
   Java Yahtzee game plus source code by Dan Seidman.
   http://www.bodo.com/Applets/Yahtzee/

Tornado Yahtzee  
   An excellent two player flash version of Yahtzee.
   http://www.tornadogames.com/gmaster.phtml?id=32&dircode=19720216

Flash Yahtzee  
   A Flash version of the popular board game.
   http://www.webstyles.net/yahtzee/

NotZee!  
   It's Not Yahtzee. It's NotZee! Choose the type of game you would like to play. Classic, Pyramid or Diamond.
   http://harringbros.com/notzee/

Yahtzee By Shophub  
   A cold fusion version of Yahtzee
   http://www.shophub.com/yz.cfm