Tim's Yahtzee
gonebowlin.com
Single-player 'Yahtzee' clone for Windows with simple point and click play.
Yahtzee Master
jamesgart.com
For Windows and Linux, features multiplayer, a computer player and high scores.
Knuffel
plenio.com
Windows game based on 'Yahtzee' with a mailing list, chat page, and high scores list.
Dolphin Dice
johannorberg.se
A Yahtzee game for Windows that features high scores comparisons with others from around the world.
Yahtzee
rekenwonder.com
A version for Windows.