> It might be helpful for somebody to summarize the net
> addresses of the existing Free code licenses and what
> kind of Free reuse they permit and what kind of conversion
> from Free to non-Free they permit.
This is covered pretty well in the Ada Community License. Visit
to read the full text.
To my knowledge, nobody else has used it for licensing, opting instead
for the (slightly) more restrictive GNU Public License.
Let me make a comment here. I work in the C/Perl/Java communities as
well as the Ada community. It is without fail that the Ada community
worries the most about free vs. non-free stuff, and that there are a
good many "commercial"(actually "aerospace") companies that reject
"free" software for very unrealistic fears. Perhaps it's just a
culture thing. Commercial companies are very focused on getting the
job done and hitting time-to-market issues (and, yes, sacrificing
quality in the process). I have yet to see corporate hand-wringing
about licensing terms from any commercial companies I'm working
for/with. That doesn't mean they're violating things, it's just that
they don't have bored lawyers saying "How can we _prevent_ engineers
from using this software?"
The ACL answers all your questions, Mike.