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:...
new 3d markup language for creating one tool for all 3d CAD data in the world.it is for viewing 3d data without plugins on web and desktop and for creating 3d pdf in one step.