> Can I buy the PRO version and give it to my friends, can I study it, can I modify it?
Mostly: JuliaPro is essentially a nice convenient installer of a huge collection of open source work (though I can't say for sure, as I'm not really involved in that part). A few small components (e.g. the Excel plugin) are not open, and we are moving to MKL for some stuff, so that will change slightly though.
Open source business models are hard (as you're no doubt aware). You may disagree, but I think Julia Computing has so far done a good job of balancing the open source vs business aspect, which is part of the reason I originally joined.
Mostly: JuliaPro is essentially a nice convenient installer of a huge collection of open source work (though I can't say for sure, as I'm not really involved in that part). A few small components (e.g. the Excel plugin) are not open, and we are moving to MKL for some stuff, so that will change slightly though.
Open source business models are hard (as you're no doubt aware). You may disagree, but I think Julia Computing has so far done a good job of balancing the open source vs business aspect, which is part of the reason I originally joined.