I (<piggy@hilbert.maths.utas.edu.au> (La Monte Yarroll)) write:

>    If the price is very low, is that close enough to "free"?
[I cited KCL in my original posting.]

Brian Fox <bfox@ai.mit.edu> writes:
> 
> No.  The problem here is not the price, it is the ability to
> redistribute the source.  Licensing agreements are a way of preventing
> redistribution, and that means the program is not free.

There is no real problem to distributing KCL source code--you can get
even get a license by email.  The entire ACKL package is just such an
item.

Your assertion that "licensing agreements are a way of preventing
redistribution" is a little to pat.  In particular, you are ignoring
the fact that the GPL _is_ a license.