DICE

A die (plural dice, from Latin datum "something given or played") is a small throwable object with multiple resting attitudes, used for generating random numbers or other symbols. This makes dice suitable as gambling devices, especially for craps or sic bo, or for use in non-gambling tabletop games. A traditional die is a cube (often with corners slightly rounded), marked on each of its six faces with a different number of circular patches or pits called pips. All of these pips have the same appearance within a set of dice, and are sized for ease of recognizing the pattern formed by the pips on a face. The design as a whole is aimed at each die providing one randomly determined integer, in the range from one to six, with each of those values being equally likely.

This is what states Wikipedia at the word "DICE".

DICE UNLIMITED is a dice rolling tool realized to help all you role-playing game lovers on your preferred table rpg.

It features D4, D6, D8, D10, D12 and D20 in the three most used themes: CLASSIC, FANTASY, SCI-FI.
Soon coming themes GOTH and MILITARY.
Rolls happen in awesome 3D graphics environments and score and average are visualized.

You need to install the Unity Web Player to access the application. It's free, it takes less than 15 seconds and is totally safe: it is also used by the well known Kongregate games website.