Rolz - Free dice-rolling tools for role-playing games.
Kiriki - Kiriki is a dice game for Linux distributed by KDE, based on the popular analog dice game called Yahtzee. Designed to be played by as many as six players, participants have to collect points by rolling five dice for up to three times per turn.
Yahtzee Master - The Game of Yahtzee online or offline.
Dice with Buddies - Play against family and friends anytime, anywhere.
RANDOM.ORG - RANDOM.ORG offers true random numbers to anyone on the Internet.
Yachty - Classic dice game played solo offline or online.