15 Best Free and Open-source CAD Software

Open-source and free CAD software can prove a valuable resource to those looking for an alternative to paid CAD Softwares like AutoCAD.

CAD—computer-aided design or computer-aided drafting is a technology to create real-world objects on your computer screen to understand them deeply. For example, if you want to build something new and creative such as a new home, car, bridge etc. you want to see it before going to implement its design in the real world. You want to see how it looks and works.

CAD technology has been widely used in various fields of engineering design. The development and application of CAD systems have caused profound changes in traditional product design methods and production models, resulting in huge social and economic benefits.

At present, CAD technology research hotspots include computer-aided conceptual design, computer-supported collaborative design, massive information storage, management and retrieval, design method research and related issues, and support for innovative design. It is foreseeable that technology will have a new leap and will also cause a design change

CAD technology has been constantly developing and exploring. The application of CAD technology has played a role in improving enterprise design efficiency, optimizing design schemes, reducing the labour intensity of technicians, shortening design cycles, and strengthening design standardization. More and more people realize that CAD is huge productivity. CAD technology has been widely used in machinery, electronics, aerospace, chemical, construction and other industries. Design methods such as parallel design, collaborative design, intelligent design, virtual design, agile design, and full lifecycle design represent the development direction of modern product design patterns. With the further development of artificial intelligence, multimedia, virtual reality, information and other technologies, CAD technology is bound to develop in the direction of integration, intelligence and synergy. Enterprise CAD and CIMS technology must take a step-by-step approach with e-commerce as the goal. From the inside of the enterprise, realize integrated, intelligent and networked management, use e-commerce to cross the boundaries of enterprises, and realize the agile supply chain between customers, enterprises and suppliers in the true sense.

List of Best Free and Opensource CAD Software

Here are some free CAD software including opensource perfect to start with designing and 3D modelling for beginners and professionals…


Archimedes is a free and open-source CAD software (Computer-Aided Design). Blender is the free and open-source 3D creation suite that supports rendering, compositing and motion tracking, even video editing modelling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing, and game creation.

Archimedes is a free and open source CAD (Computer Aided Design) software

Download Link


Blender is the free and open-source CAD software comes with 3D creation suite supports modelling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing, and game creation. See: How to download and install Blender in Ubuntu

Blender CAD opensource prograame


SketchUp: 3D modelling for everyone

SketchUp is an online free 3D modelling software that can use for drawing lines and shapes. Push and pull surfaces to turn them into 3D forms. Stretch, copy, rotate and paint to make anything you like.

Google SketchUp 3D modeling for everyone

Website Link: https://www.sketchup.com/


LibreCAD is a free Open Source 2D CAD application for Windows, Apple, and Linux. It is a fork of QCAD and the interface of LibraCAD is look like AutoCAD. SO, if you are familiar with AutoCAD then you can easily operate LibraCAD. It supports 2D only, so if you want an open-source CAD software for creating a site plan or something flat then using it make more sense.

LibraCAD opensource CAD software

Website Link: http://librecad.org/cms/home.html

OpenSCAD: 3D CAD Modeller

OpenSCAD is another free CAD software that is worth to mention and available for Linux/UNIX, MS Windows and Mac OS X. OpenSCAD provides two main modelling techniques: First there is constructive solid geometry (aka CSG) and second there is an extrusion of 2D outlines. Besides DXF files OpenSCAD can read and create 3D models in the STL and OFF file formats.

Openscad Opensource CAD software

Website Link: http://www.openscad.org


It is another popular open-source parametric 3D CAD modeller for CAD, MCAD, CAx, CAE and PLM. It can be used by a variety of peoples such as architecture or other engineering specialities.
FreeCAD is based on a powerful geometry kernel called OpenCasCade and offers the same UI on Windows, Mac OSX, and Linux platforms. It can read and writes many open file formats such as STEP, IGES, STL, SVG, DXF, OBJ, IFC, DAE and many others.

FreeCAD professiona opensource free cAD software

Website Link: https://www.freecadweb.org/


QCAD is a free, open-source application for computer-aided drafting (CAD). It is a 2D designing software to draw 2D drawings such as plans for buildings, interiors, mechanical parts or schematics and diagrams. QCAD works on Windows, macOS, and Linux.

Website Link: http://www.qcad.org/en/

qcad3 windows CAD software


BRL-CAD is a cross-platform Open source CAD software. It is a solid geometry and modelling system includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal processing tools.

BRL-CAD free & Open source CAD Software

Website Link: http://brlcad.org/

Onshape: Full-Cloud CAD

Onshape is free CAD platform that provides free enterprise-grade CAD functionality. It also gives unlimited storage for public projects.

Onshape Full-Cloud CAD free online CAD software

Website Link: https://www.onshape.com

Note: Not free anymore…


VPython is allowed you to write Python programs that generate navigable real-time 3D animations. It is based on the cross-platform library wxPython.

VPython-wx 2D CAD free software

Website Link: http://vpython.org/

Sweet Home 3D

The Sweet Home 3D is a free interior design application which helps you in designing the house design. You can also see the 3D view of, how your furniture looks like in your newly designed house.

SweetHome3D openosurce CAD software

Website Link: http://www.sweethome3d.com/

Wings 3D

Wings 3D is open source and completely free for use in both personal and commercial projects. Wings 3D offers a wide range of modelling tools, a customizable interface, support for lights and materials, and a built-in AutoUV mapping facility. But there is no support in Wings for animation.

Wings 3D opensource CAD free software

Website Link: http://www.wings3d.com/


OpenPLM is an open-source PLM ( Product Lifecycle Management) software. It is business software that unifies all the company’s development activities and structures data around the product. This Open-source CAD Software can help engineer, technician, and all peoples to manage Office, CAD, ECAD, Source code, FEA in them collaborating together. OpenPLM features a full web and user-friendly interface.

Website Link: http://www.openplm.org/trac

OpenPLM free and Open source CAD Software program


It is a powerful, open-Source programmatic CAD software that allows you to solve your designing problems using the power of math, using coding.

ImplicitCAD programming free and Open source CAD Software

Website Link:http://www.implicitcad.org/


It is a real-time 3D modelling and animation tool that can use to create an animated scene by using a simple drag and drop approach. Your animation can be stepped through a frame at a time, viewed in real-time, or recorded to a Video (AVI) file so that you can distribute your creation.

3DCrafter free cad software

Website link: http://amabilis.com/products/


nanoCAD Plus is a professional grade CAD tool. It comes in various free and pro versions according to ones need. It supports .dwg file format and the interface of this CAD software is easy to use with powerful drafting and design. If you want some command-line tool, SNAP and OSNAP then you have to move to the pro version.

NanoCAD free CAD software programme

Website Linkhttp://nanocad.com/

Tinkercad- Free online CAD

Tinkercad is a free, easy-to-use app for 3D design, electronics, and coding. It helps teachers, kids, hobbyists, and designers to imagine, design, and converting their imagination on a computer screen.


Fusion 360 free 3D CAD/CAM

It is a free CAD product from AutoDesk for Students and educators.

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So, these are few best and free opensource CAD software available online and can be easily downloaded from the link provided after each CAD software. If you have any suggestion or know any CAD application or program which is free or open source then please let us know using the comment section. We will review and glad to include that in this list. Till then thanks for reading and have fun!!

Comments (8)

  1. Ramakrishnan May 25, 2018
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