Which packages have you looked at?
Have you been misunderstanding this type of statement:
Quote:
If your application incorporates 3rd Millennium software, but you do not want to distribute your software (internally or externally) under the General Public License, you must first obtain a commercial license from 3rd Millennium.
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Obtaining a commercial license is only necessary if you modify the GPL'ed software and don't wish for it to remain GPL'ed.
If you don't modify it, or keep it GPL'ed, then a commercial license isn't necessary.
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I found this paper on the web. Maybe it might help:
http://contenthere.net/articles/opta...012206_sgg.pdf