cad

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Fritzing is essentially an Electronic Design Automation software with a low entry barrier, suited for the needs of designers and artists. It uses the metaphor of the breadboard, so that it is easy to transfer your hardware sketch to the software. From there it is possible to create PCB layouts for turning it into a robust PCB yourself or by help of a manufacturer. The gEDA project has produced and continues working on a full G PL 'd suite and toolkit of E lectronic D esign A utomation tools. These tools are used for electrical circuit design, schematic capture , simulation, prototyping, and production. Currently, the gEDA project offers a mature suite of free software applications for electronics design, including schematic capture, attribute management, bill of materials (BOM) generation, netlisting into over 20 netlist formats, analog and digital simulation, and printed circuit board (PCB) layout. http://www.gpleda.org/

gEDA Project&#039;s Homepage

free-cad

http://sourceforge.net/apps/mediawiki/free-cad/index.php?title=Main_Page FreeCAD is a general purpose feature-based, parametric 3D modeler for CAD , MCAD, CAx , CAE and PLM , aimed directly at mechanical engineering and product design but also fits a wider range of uses in engineering, such as architecture or other engineering specialties. It is 100% Open Source and extremely modular, allowing for very advanced extension and customization. FreeCAD is based on OpenCasCade , a powerful geometry kernel, features an Open Inventor -compliant 3D scene representation model provided by the Coin 3D library, and a broad Python API. The interface is built with Qt .
CollabCAD is a 3D CAD/CAM Software system for collaborative design & development of Industrial Designs. It provides a total solution from product design, numerical control, visualization, simulation, analysis to content management, workflow and office automation. CollabCAD is an initiative of National Informatics Centre (NIC, Department of Information Technology), Bhabha Atomic Research Centre (BARC, Department of Atomic Energy) and Vikram Sarabhai Space Centre (Department of Space, VSSC). CollabCAD is developed on the Linux platform and is available on Windows and Linux.

Collaborative CAD Software

http://www.collabcad.com/index.html
http://code.google.com/p/heekscad/ I don't have time to administer HeeksCAD properly and I suggest for a more active project you look at FreeCAD. However, I plan to use this Google Code repository as a fork of HeeksCAD aimed at being simpler than it is. I plan to revert the undo code, so that HeeksCAD is quicker and so I can understand it I plan to remove constraints. HeeksCAD will never be a parametric CAD system. Functionality: Import solid models from STEP and IGES files.

heekscad - Google Code

http://www.dgp.toronto.edu/~shbae/ilovesketch.htm

ILoveSketch

100 concept models created by sketching with ILoveSketch for 4.5 days at Emerging Technology, SIGGRAPH 2009 (New Orleans, LA, USA, August 3-7) A 3D curve sketching system that captures some of the affordances of pen and paper for professional designers, allowing them to iterate directly on concept 3D curve models. The system coherently integrates existing techniques of sketch-based interaction with a number of novel and enhanced features.

QCad

http://www.ribbonsoft.com/qcad.html QCAD is an application for computer aided drafting in two dimensions (2d). With QCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schemas and diagrams. QCAD works on Windows, Mac OS X and many Linux and Unix Systems. The source code of the QCAD community edition is released under the GPL (Open Source). The current stable version of QCAD is 2.2.