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LibreCAD is an open-source cross-platform 2D CAD program, which is translated in over 30 languages.
LibreCAD is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2.
This program 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.
License: https://www.gnu.org/licenses/gpl-2.0.html
Source:...
This is a SDK which can nest/layout the part/geometry/polygon on the material or sheet intelligently, you can get the best utilization of the materials, this SDK also support read/write DXF/DWG files and part-in-part nesting.
New nesting lagorithm is implenmented, more good to support true shape part or material.