Of course I have come across ET Fan's Blackjack PowerSim software. While the feature set and the execution speed look very powerful, it has been written at least 10 years ago in the now somewhat outdated XBasic programming language. I could use Blackjack PowerSim as a starting point for my work, but was wondering if there are any other open source Blackjack simulators which have been written in more common programming languages such as C++, Java or Python? Again, the key thing for me is that the source code should be available so I can customize it, so closed source simulators like CVCX would not be relevant here.