LibreCAD, Open Source 2D-CAD
This year we will be participating in GSoC 2015. We really hope we can get some slot's like we did last year. Thumbs crosses!
LibreCAD is a free Open Source CAD application for Windows, Apple and Linux. Support and documentation is free from our large, dedicated community of users, contributors and developers. You, too, can also get involved!
Our Wiki : http://wiki.librecad.org
Our Forum : http://librecad.org/cms/home/get-help/forum.html
Our Blog : http://blog.librecad.org/
Our Code Repository : https://github.com/LibreCAD/LibreCAD
Video Tutorials: http://www.youtube.com/results?search_query=librecad (Big thanks to the tutorial authors)