SourceForge gerhardb JIBS is is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation. The General Public License does not permit incorporating JIBS into proprietary programs.
This link will take you to the actual license.
JIBS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.