A variety of questions on RPG StackExchange fit the pattern of asking questions around the probabilities of advantage or disadvantage with or without a bonus versus x number of dice with or without a bonus.
We have considered coding one ourself, but before doing that it seems prudent to ask is there any online web based tool that allows you to see the probabilities of advantage or disadvantage with or without bonuses against an arbitrary collection of dice also with or without bonuses? Ideally, the results would include a graph.
Please note: We are not looking for a recommendation of the best, or a discussion of which is the best, but rather, simply whether such an online resource even exists. Additionally - we are not looking for broad solutions - but this single, exact scenario described.
Addendum: Regarding AnyDice - it appears it will require programming to get it to recognize the concept of Advantage and Disadvantage. If anyone has preconfigured, programmed examples for AnyDice to meet the scenario described above - please link to them.