Top 20 Free AutoCAD Alternatives

Top 20 Free AutoCAD Alternatives

AutoCAD is a computer-aided design (CAD) software application for 2D and 3D design and drafting. It is developed by Autodesk and is one of the most popular CAD programs in the world. AutoCAD is used by architects, engineers, designers, and other professionals to create drawings and models for a wide range of projects, including buildings, bridges, machines, and products.

AutoCAD is a powerful tool that can be used to create complex and detailed designs. However, it can also be difficult to learn and use. There are many resources available to help users learn AutoCAD, including online tutorials, training courses, and books.

AutoCAD is a valuable tool for professionals in many industries. It can help users to create high-quality designs quickly and efficiently.

Top 20 Free AutoCAD Alternatives

AutoCAD offers a wide range of features, including:

  • 2D drafting and 3D modeling tools
  • Parametric design capabilities
  • Collaboration features
  • Integration with other Autodesk software products

1. Open Cascade

Open Cascade (OCCT) is an open-source software development platform for 3D CAD, CAM, CAE, and other engineering applications. It is developed and supported by Open Cascade SAS company. OCCT is a full-scale B-Rep modeling toolkit that provides a comprehensive set of features for 3D modeling, geometry processing, visualization, and data exchange.

OCCT is used by a wide range of companies and organizations, including Airbus, Boeing, Dassault Systèmes, Siemens, and NASA. It is also used by many universities and research institutions for teaching and research purposes.

OCCT is a popular choice for developing CAD software because it is free and open-source, and it offers a wide range of features. It is also relatively easy to learn and use, making it a good choice for beginners.


QCAD is a versatile free and open-source computer-aided design (CAD) software designed for 2D drafting and design, compatible with Linux, macOS, Unix, and Microsoft Windows operating systems. Built on the Qt cross-platform framework, QCAD boasts an array of features encompassing 2D drafting tools like lines, arcs, circles, rectangles, and polygons, along with dimensioning, annotation, layering, hatching, and libraries for blocks and symbols. It supports the import and export of various CAD file formats, including DWG and DXF.

QCAD’s power and flexibility make it suitable for tasks ranging from technical drawings and architectural plans to engineering diagrams, making it an excellent choice for students, hobbyists, and professionals alike.

Some key advantages include its open-source nature, cross-platform availability, rich 2D design capabilities, user-friendliness, and a thriving community of users and developers, making QCAD a compelling option for those seeking a free and open-source CAD solution.

3. FreeCAD

FreeCAD is an open-source parametric 3D CAD modeler. It offers a versatile platform for designing complex 3D models, including parametric modeling, modular architecture, and a community-driven library of extensions. It is a powerful tool for engineers, architects, and designers, providing a cost-effective solution for 3D modeling and design.

4. Solvespace

Solvespace is a free and open-source parametric 3D CAD modeling software that provides a robust platform for designing 3D models and assemblies. Its standout feature is its parametric modeling capabilities, allowing users to create designs with precise control over dimensions and relationships. Solvespace also includes 2D sketching tools, making it a versatile option for both 2D and 3D modeling needs. It supports various file formats, making it compatible with other CAD software, and it’s particularly useful for engineers, hobbyists, and anyone requiring a capable and user-friendly CAD tool for their projects.

Furthermore, Solvespace is cross-platform, running on Linux, macOS, and Windows, making it accessible to a wide range of users. Its user interface is intuitive, and it offers features such as assemblies, 2D drawing export, and a scripting interface for automation. Whether you’re a professional engineer or a hobbyist looking to create precise 3D models, Solvespace provides a versatile and cost-effective solution for your CAD modeling needs.

5. LibreCAD

LibreCAD is a free and open-source 2D computer-aided design (CAD) application that empowers users to create detailed and accurate 2D drawings and technical designs. With a user-friendly interface and an array of drawing tools, LibreCAD is particularly valuable for architects, engineers, and draftsmen who require precise 2D drafting capabilities. It supports industry-standard file formats like DXF and DWG, enabling seamless collaboration with other CAD software. LibreCAD’s accessibility, coupled with its open-source nature, makes it a valuable tool for professionals and hobbyists seeking a cost-effective solution for 2D design projects.

6. BricsCAD

BricsCAD is a robust and versatile computer-aided design (CAD) software solution that stands out for its compatibility with industry-standard DWG file formats, making it a seamless alternative to AutoCAD. Offering a comprehensive set of 2D and 3D design tools, BricsCAD caters to a wide range of design and engineering tasks. Its intuitive interface, extensive customization options, and support for third-party applications and APIs make it a preferred choice for professionals in architecture, engineering, and construction, allowing them to efficiently create, edit, and collaborate on intricate CAD projects while benefiting from cost-effective licensing options.


BRL-CAD (Ballistic Research Laboratory Computer-Aided Design) is an open-source solid modeling system with a focus on complex geometry and physics simulations. Originally developed for military and engineering applications, it’s now widely used for modeling and analyzing intricate 3D designs. BRL-CAD excels in precision and scientific accuracy for diverse engineering and scientific projects.

8. LeoCAD

LeoCAD is a free and open-source CAD software specifically designed for creating virtual models with LEGO bricks. It offers a user-friendly interface and a library of LEGO elements, allowing enthusiasts and builders to design and visualize their creations digitally. LeoCAD simplifies the planning and building process for LEGO enthusiasts.

9. Wings 3D

Wings 3D is a free and open-source 3D modeling software known for its simplicity and focus on organic modeling. With a user-friendly interface and robust modeling tools, it’s ideal for artists and designers creating 3D models for animation, gaming, and visualization. Wings 3D facilitates the creation of detailed and intricate 3D shapes.

10. HeeksCAD

HeeksCAD is an open-source, parametric 3D CAD modeler primarily designed for mechanical engineering and product design. It offers intuitive tools for creating 3D models, 2D drawings, and CAM (Computer-Aided Manufacturing) data. While no longer actively developed, it remains a valuable choice for users seeking a free and capable CAD solution.

11. OpenSCAD

OpenSCAD is a free and open-source solid 3D CAD modeler software. It uses a script-based approach, allowing users to create 3D models by writing code rather than using a graphical interface. This unique method is favored by engineers and programmers for its precision and control in designing parametric 3D objects.

12. Antimony

Antimony is a powerful, open-source, node-based computational design and 3D modeling software. It enables users to create complex parametric designs by connecting visual elements through nodes, making it highly versatile for generative art, product design, and architectural modeling.

Antimony’s unique visual programming approach simplifies complex tasks, and it offers real-time feedback on design changes. While it is no longer actively developed, Antimony remains a valuable tool for creative individuals and designers looking for a novel and flexible way to explore parametric modeling and computational design, pushing the boundaries of what’s possible in 3D modeling and artistic expression.

13. ImplicitCAD

ImplicitCAD is an open-source parametric CAD (Computer-Aided Design) software that employs functional programming to generate 3D models. It utilizes a declarative approach, allowing users to define geometry through mathematical equations and functions.

This innovative method is particularly useful for creating intricate, customizable designs, such as mechanical parts and artistic sculptures. ImplicitCAD’s design process is transparent, making it easier for users to understand and modify their models.

Though it may not have the extensive features of some commercial CAD software, ImplicitCAD’s unique approach attracts programmers, mathematicians, and designers seeking a flexible and mathematically-driven CAD solution.

14. BlocksCAD

is an educational and open-source platform that introduces coding and 3D modeling concepts to young learners. It employs a block-based coding system, where users stack visual blocks to create 3D designs. This intuitive approach allows students to explore geometry, mathematics, and programming in a fun and engaging manner. BlocksCAD is particularly well-suited for educators looking to teach STEM subjects while fostering creativity and problem-solving skills. Its web-based interface makes it easily accessible, and its compatibility with 3D printers enables students to bring their digital creations to life.

In addition to its educational focus, BlocksCAD also serves as a practical tool for creating 3D models for 3D printing and design projects. It offers a versatile platform for users of all ages to craft complex 3D designs while gaining valuable experience in coding and geometry. Whether used for educational purposes or practical design tasks, BlocksCAD provides an innovative and accessible way to explore the world of 3D modeling and coding.

15. SketchUp Free

SketchUp Free is a web-based 3D modeling application that offers a simplified and intuitive design environment. It is particularly popular among beginners, architects, and interior designers. With a user-friendly interface and basic modeling tools, users can create 3D models for a variety of purposes, from architectural planning to DIY projects. SketchUp Free also integrates with the broader SketchUp ecosystem, allowing for easy collaboration and access to a vast library of 3D models and extensions. However, the free version has limitations compared to the paid SketchUp Pro, particularly in terms of advanced features and export options.

Despite its limitations, SketchUp Free remains a valuable tool for those seeking a quick and accessible way to create 3D designs. While it may lack some of the advanced capabilities found in premium 3D modeling software, its simplicity and online accessibility make it an excellent choice for hobbyists and professionals seeking to quickly visualize their ideas in three dimensions.

16. KiCAD

KiCad is a free, open-source electronic design automation (EDA) software suite. It enables users to design electronic schematics and printed circuit boards (PCBs) for a wide range of electronic projects. With its user-friendly interface and extensive library of electronic components, KiCad is popular among hobbyists, students, and professionals alike. It offers features like 3D modeling, real-time design rule checking (DRC), and extensive file format compatibility, making it a versatile choice for PCB design.

KiCad’s collaborative and community-driven nature ensures continuous improvement and expansion. Its robust capabilities empower users to create complex electronic designs, from simple prototypes to intricate circuitry, all without the cost associated with commercial EDA software.

17. NanoCAD

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nanoCAD is a powerful and low-cost computer-aided design (CAD) software application. It offers a wide range of 2D and 3D design tools, making it a suitable option for professionals and businesses seeking an affordable alternative to more expensive CAD solutions. nanoCAD’s interface is user-friendly and resembles popular CAD programs, making it easy for users to learn and use.

It supports industry-standard file formats like DWG, allowing for seamless collaboration with others in the industry. While it may lack some advanced features found in high-end CAD software, nanoCAD is an excellent option for drafting, designing, and creating detailed technical drawings without breaking the bank. Its flexibility and cost-effectiveness make it a valuable tool for engineers, architects, and designers.

Latest data:

  • nanoCAD is currently used by over 1 million users in over 100 countries.
  • nanoCAD has been downloaded over 10 million times.
  • nanoCAD has a rating of 4.5 out of 5 stars on the Google Play Store.

nanoCAD is a powerful and affordable CAD software application that is suitable for a wide range of users. It is easy to learn and use, and it supports industry-standard file formats. nanoCAD is a great option for businesses and professionals seeking to streamline their design processes while minimizing software costs.

18. TinkerCAD

Tinkercad is a user-friendly, web-based 3D design and modeling application. It’s an excellent tool for beginners, students, and enthusiasts looking to create 3D models and explore the world of 3D printing. Tinkercad’s intuitive interface allows users to drag and drop shapes, combine them, and manipulate designs with ease. Its library includes a wide range of 3D shapes and components, simplifying the design process. While it may not offer the advanced features found in professional 3D modeling software, Tinkercad excels in accessibility and simplicity, making it a valuable starting point for anyone interested in 3D design and printing.

As a browser-based application, Tinkercad eliminates the need for downloads and installations, ensuring compatibility with various devices. It’s particularly suitable for educational settings, where students can quickly grasp the basics of 3D design and translate their ideas into tangible creations.

19. Sweet Home 3D

Sweet Home 3D is a user-friendly, open-source interior design software application that empowers users to create detailed floor plans and 3D models of interior spaces. It offers a vast library of furniture and home decor items, enabling users to visualize their interior design ideas realistically. The software’s intuitive drag-and-drop interface simplifies the design process, making it accessible to both professionals and DIY enthusiasts. Sweet Home 3D also supports real-time 3D viewing and allows users to generate 2D floor plans with precise measurements. It is a valuable tool for architects, interior designers, and homeowners seeking to plan and visualize their home renovation or interior decoration projects with ease.

20. SculptGL

SculptGL is a powerful and accessible 3D sculpting software application that operates directly in web browsers. It is designed for digital artists, sculptors, and enthusiasts, providing a platform to create intricate 3D models with ease. SculptGL offers a wide range of sculpting tools, including brushes and dynamic tessellation, enabling users to shape and refine their models with precision.

The real-time rendering and symmetry features further enhance the sculpting experience. Its user-friendly interface and the absence of installation requirements make it a popular choice for those who want to explore 3D sculpting without the need for complex software or downloads. Whether for artistic expression or 3D printing, SculptGL is a versatile and accessible tool for digital sculpting projects.

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