Which packages have you looked at?
Have you been misunderstanding this type of statement:
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.
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.
I found this paper on the web. Maybe it might help: