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CAD Programs

There are a few free CAD programs that offer an alternative to the expensive applications widespread in industry. The alternatives presented here, for free download, are able to give you excelent quality design tools, in 2D, 3D and architecture. Some of these programs have tutorials and user's groups.


Autodesk123D

It is a free solid modeling software program based on the Autodesk used in industry. Easy to use and full of smart tools, is one of the favourites free CAD programs. It has also tutorials and user forums.

DraftSight

DraftSight from Dassault (the same of CATIA) is a good option for 2D CAD. Its interface looks like AutoCAD and it is free for personal and commercial use. 

SketchUp

A 3D CAD program suitable for a broad range of applications (mechanical, civil, aerospace, naval, etc.). The highlight is the ease of use, a huge library of pre-designed scenes and objects. It can createssurfaces from lines and extrudes 3D solids from surfaces.

progeCAD Smart!

AutoCAD functionality for free personal use. Edit files from almost any version of AutoCAD, as well as DXF. Similar icons, commands and interface.  It is easy to learn and simple to install. progeCAD Smart is charityware that is intended for use by non-profit organizations, students learning CAD, teachers and hobbyists.

Free CAD

FreeCAD is a open source Multi-platform 3D CAD modeler with advanced Motion Simulation capabilities. Suitable for anyone interested in learning 3D CAD and Motion Simulation for free before using more sophisticated packages. It mainly focus on mechanical engineering and product design but also fits in a wider range of uses around engineering and architecture.

Sweet Home 3D

A free interior design application, even for commercial purpose. Very good for designing home interior, very simple and useful.

Solid Edge 2D Drafting

All-in-one compact 2D drafting package, with all the necessary AUTO CAD operations to the user. It is free to download and easy to use  and, but comes with free upgrades

3D XML

Free program from Dassault Systemes that allows the visualizatioin of 3D XML files. Extremelly useful for visualization of CATIA models (stp file, for example) on your PC and generating pictures for report.

Blender

Blender is a complete software package for 3D modeling, texturing, rendering, animation and physics. It has a complex but merciful user interface. The software can import from and export to more than 20 different file formats. There is a large community of users and a fine tutorials.

gCAD3D

It is a freeware 3D CAD/CAM software that include 3D OpenGL viewer and also provide support for both importing and exporting Iges, DXF, and VRML files. It’s an easy to use and even a beginner can create professional drawings with a minimum of effort.

pCon.planner

It is a professional, free application for space and interior planning. Create complex projects in a very simple way. Renders photo-realistic images and craete videos. Very good for architects,interior designers, a facility managers or a private users.