Macsyma is still being sold, isn't it?



Hi

I stumbled upon http://www.symbolics.com/

Is Macsyma still being sold?

If any of you has a copy of it,
could they tell me if it does something 
that Maxima doesn't do or if it performs better
than Maxima?

If Macsyma were somehow still in business
would the owner of Macsyma be allowed to use 
and sell portions of our code in their software?

   Regards

   Fabrizio