Ok, I try a (long) short on the thread responses:
0) whatever closed/sewing on infringement/fs license solution, there
could be unlikely some robberies, also ideas themselves cannot be
copyrighted and you will experience clones if there is a market.
1) As I said, VIM /is a charity-ware/ which /can also be distributed
as GPL/ an I'm not aware of any GPL distribution nor any robbery,
while only a few persons afford (volunteer basis). And if I red right
that last point is not an issue for you.
2) As another post said, /you can enforce some terms with GPLv3/.
3) As another post said /it's up to you/ to make publicity of how your
software can helps parents/children, /especially at no cost/ (I add
some tips):
* I expect there are numerous non-profit associations in favor of
that persons: post on their mailing-lists, and please contacts their
leaders
* I expect there are medical associations or groups of
medicine/doctors on that => same action
* Numerous free software websites/blogs/... will rely a convenient
article, also numerous governments raises Free Software as a good or a
better solution (starting from South America) and actively promote it.
* In addition, in order to solve the "narrow bandwith problem" (e.g.
in Africa) and the "robbery problem" I pointed on Dia, offer yourself
for a few (copying, shipping) hard copies (cdrom, or DVD) of your
software on as numerous as you can commercial sites such as amazon,
e-bay, priceminister, etc, despite their evil philosophy for most.
** Do not forget to add a "free download URL" such as
savannah.nongnu.org (which will host you for free in an ethical way,
with a project site, a static web site, a download area and a
concurrent version system (CVS, SVN, ...) if you choose a convenient
license and proof you have correct license notices/README/COPYING in
sources) and text about your goal in announces.
** Ask permission to medical associations (after they
evaluated) to publish snippets of their critics.
** Also correctly describe your software in announces with
convenient generic keywords on disabilities you want fight on.
* If a distributed database would help, then use affero-GPLv3 for
server/database-side -- there are also Free data licenses for
databases, or if you need for enforcements from GPLv3 /on both end
user+server code as same licence/ which are not in A-GPL, post here
and write to (fsf legal?) as should be an issue which can be solved in
the future (while data(base) license *must* stay of scope of any free
software license).
** unfortunately I have no idea of how to fund hosting, except
the VIM method (ask for help outside license, hope for doctors or
parents themselves will afford /just a little/: suggest an amount such
as "you can help for that project to stay alive: just donate from
1$/£/€ to at most 12$ a year by (several means, some evils but
well-known), also offer for publicity on large donations (at least
drug laboratories /will/ afford), even for little ones (see credits in
the "Blender" movies)".
I think we can't help you more than pointing you that kind of tips.
Best regards,
TSFH