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LibreDWG logo

GNU LibreDWG is a free C library to handle DWG files. It aims to be a free replacement for the OpenDWG libraries. DWG is the native file format of AutoCAD.

GNU LibreDWG is based on LibDWG, originally written by Felipe Castro.

LibreDWG is in beta development stage. Not all planned features are yet completed, but the API should stay mostly stable. At the moment our decoder (i.e. reader) is done, just some very advanced R2010+ and pre-R13 entities fail to read and are skipped over. The writer is good enough for R2000. Among the example applications we wrote using LibreDWG is a reader, a writer, a rewriter (i.e. saveas), an initial SVG and Postscript conversion, converters from and to DXF, dwggrep to search for text, and dwglayer to print the list of layers.

Downloading LibreDWG

Follow these instructions to retrieve the latest source code from Savannah. Snapshots and binary pre-releases for windows are at github.com/LibreDWG/libredwg/releases.

Documentation

Mailing lists and updates

GNU LibreDWG has a development and general discussion mailing list: <libredwg@gnu.org>. You can subscribe through the web interface. This is the main discussion list, and is used to discuss most aspects of LibreDWG, including development, enhancement requests and bug reports.

Announcements about LibreDWG are made on <info-libredwg@gnu.org>.

To subscribe to these or any GNU mailing lists, please send an empty mail with a Subject: header of just subscribe to the relevant -request list. For example, to subscribe yourself to the GNU announcement list, you would send mail to <info-gnu-request@gnu.org>. Or you can use the mailing list web interface.

News are posted on the news section at Savannah. Click here to sign the Atom feed.

Getting involved

Development of LibreDWG, and GNU in general, is a volunteer effort, and you can contribute. For information, please read How to help GNU. If you'd like to get involved, it's a good idea to join the discussion mailing list (see above). If you want to contribute to our project, check the CONTRIBUTING file and the LibreDWG hackers' wiki, with checkout and build instructions, before diving into source code.

Releases
Releases of LibreDWG can be found at http://ftp.gnu.org/gnu/libredwg/ (via HTTP).
Trying the latest test release (when available) is always appreciated. Test releases of LibreDWG can be found at http://alpha.gnu.org/gnu/libredwg/ (via HTTP) and github.com/LibreDWG/libredwg/releases/.
Daily snaphots of all updates to master and binaries for windows are at github.com/LibreDWG/libredwg/releases/.
Development
For development sources, bug and patch trackers, and other information, please see the LibreDWG project page at savannah.gnu.org.
There are also several mirrors on gitlab and github, where the github mirror is actively maintained.
Maintainers
GNU LibreDWG is currently being maintained by Reini Urban. The former maintainers were Rodrigo Rodrigues da Silva and Felipe Correa da Silva Sanches. Please use the mailing list for contact.

Licensing

LibreDWG 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; either version 3 of the License, or (at your option) any later version.

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