Best Software for Designing my Project

[Pulsetronics]

Which is the Best software to use when designing a Multi user in human computer interaction intelligence system in the area of medicine?

 

[tggzzz]

The starting point is not the language.

The starting point is the set of standards that will be applied to your application before it can be used. Find other applicationd that meet those standards, and find how they were created.

Apart from that, given your very incomplete specification, the only sensible answer is Java. But there may well be constraints that you haven't divulged which would change that choice.