Here is a die roller that I made some time ago. While it doesn't store the die rolls, it does have a bit of functionality.
- Total Results = shows results and a total
- Drop Lowest = Rolls the desired number, but drops the lowest (ex, 4d6, drop lowest)
- Wild Die Explode = From the Star Wars RPG, if the last die is a 6, it rolls until the die is no longer a 6.
- Hero System = Stun and Body Damage per the Hero System rules.
Designate the number of dice, add a modifier if needed, and click on the die that you want to use.
Edit: Updated to handle multiple rolls of the dice indicated (ex, 6 x 4d6 + 2)