Dice Roller. This form allows you to roll virtual dice. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random.
Free Online Dice allows you to roll virtual dice or flip a coin. You can roll virtual dice for true random numbers or flip coin for decision making.
Play a 21st Century Math Game --- How Good is Your Aim? Can You Hit the Target Number? Play Competitively or Cooperatively Using.