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LibreCAD is a free Computer Aided Design (CAD) application for 2D design. It works on Linux, Mac OS X, Unix and Microsoft Windows operating systems.〔(【引用サイトリンク】url=http://www.soft32.com/blog/platforms/windows/librecad-the-only-major-free-computer-aided-design-program/ )〕 LibreCAD was developed as a fork of QCad Community Edition. The GUI of LibreCAD is based on Qt4 libraries, so it runs on several platforms in the same way.〔(【引用サイトリンク】url=http://newsoftwarepc.com/review-about-linux-librecad-and-linux-inkscape.html )〕 Most of the interface and handle concepts are analogous to AutoCAD, making it easier to use for users with experience of this type of commercial CAD application. LibreCAD uses the AutoCAD DXF file format internally for import and save files, as well as allowing export to many other file formats. == GPLv3 vs GPLv2 controversy == As the GNU LibreDWG library was changed to GPLv3 it can't be used anymore by LibreCAD (and FreeCAD) as both licenses are incompatible.〔(【引用サイトリンク】 title=Frequently Asked Questions about the GNU Licenses – Is GPLv3 compatible with GPLv2? )〕 A request also went to the FSF to relicense GNU LibreDWG as GPLv2, which was rejected. This controversy has been resolved by writing a new library called (libdxfrw ), with more complete DWG support 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「LibreCAD」の詳細全文を読む スポンサード リンク
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