Get a lawyer that knows this stuff. Whilst asking around is good, if you want serious answer - you can't count on bunch of people on the list. Within GPL there are also variants, like LGPL, AGPL, etc. There are some lawyers that specialize in opensource, ask them. Most people here should have added to their post - IANAL.. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general