For the free software movement, however, non-free software is a social problem, and the solution is to stop using it and move to free software.

FORBES: Free Versus Open: Does Open Source Software Matter In The Cloud Era?

It says that non-free software is an inferior solution to the practical problem at hand.

FORBES: Free Versus Open: Does Open Source Software Matter In The Cloud Era?

But now, GreenPrint is offering a free version of the software for non-business use, supported by advertising.

CNN: Software saves trees, cash and headaches, says creator