[Axiom-developer] Re: [Maxima] Re: GCL used commercially?



    That is a very broad and misleading statement.  Many so-called "free"
    licenses, in particular the GPL, require computer users to give up their
    freedom as well.

The GPL only stops you from denying other users their freedom.
See http://www.gnu.org/philosophy/freedom-or-power.html for
more explanation.