C++ has a great support and is stable, has a super powerful community, good libs (boost) C# is also good and stable, if you want Linux, you can use Mono. Java

C++ has a great support and is stable, has a super powerful community, good libs (boost) C# is also good and stable, if you want Linux, you can use Mono. Java - is ok as well here, can be mixed with C++ I would personaly choose C++(low)/Python(high) pair for this task