Available on the desktop of your choice.
I wrote Panopset Blackjack because none of the simulators I could find had a fast deal feature. When practicing the basic strategy, I don't care about the outcome of the hand, just whether or not I made the correct decision.
It is entirely your responsibility to independently verify its accuracy.
That said, a link to Gamblers Anonymous should serve to provide a far better disclaimer, than the poor words of an old gambler.
Blackjack is incredibly tedious and tough to beat these days, but I still love the game and go play once in a while. I see people come and go and make incredibly bad decisions, not splitting 8's etc. Usually I eventually lose my stake, but I tend to last longer than the average players. I don't understand why someone would ever sit down at a blackjack table without at least having the basic strategy memorized. This game helps you memorize the basic strategy, and has card counting simulation scenarios for you to try, but I wrote those a long time ago when you could still find good tables with reasonable rules. Nowadays, you can't even re-split aces anywhere anymore, so what's the point, right?