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Top Free General-Purpose CAD Software

If you have worked with CAD, or even dabbled with CAD drafting, you probably know how powerful and important these tools are across a variety of industries. Computer aided design and drafting software is used not only in architecture and engineering, but also in the creation of video games and in the classroom. Due to the high demand of CAD, and the increased need for companies to invest in a CAD designer, computer aided drafting all together can cost an awful lot of money. Fortunately, we have compiled a list of the best free and open source CAD software! Now, you can enjoy all the fun offered by a computer aided design without the heavy price tag

If you’d like to see more products and to evaluate additional feature options, compare all General-Purpose CAD Software to ensure you get the right product.

Top 10 Free General-Purpose CAD Software in 2021

  • AutoCAD
  • SketchUp
  • Onshape
  • AutoCAD LT
  • MicroStation
  • Inventor
  • Fusion 360
  • DraftSight
  • Solid Edge
  • BricsCAD

View Free General-Purpose CAD Software

G2 takes pride in showing unbiased reviews on user satisfaction in our ratings and reports. We do not allow paid placements in any of our ratings, rankings, or reports. Learn about our scoring methodologies.
Results: 18

AutoCAD

AutoCAD

(1,060)4.4 out of 5

Optimized for quick response
Entry Level Price:$1470 /1 year

Subscribe to Autodesk® AutoCAD® including specialized toolsets and get access to industry-specific functionality, greater mobility with the new web and mobile apps, and the latest feature updates. Speed up your work with specialized features & libraries for mechanical design, architecture, 3D mapping, and more while working in a familiar AutoCAD interface. Only AutoCAD, with the new web and mobile apps, gives you the freedom and flexibility to work on anything, anywhere, at any time. Design… Show More

Criss A.
Auto CAD is an ally for my two-dimensional and three-dimensional designs, we have personally worked with drawings for the design of parts for… Read review
David V.
AutoCAD is my necessity for bringing the modifications in my departments. It has enabled me to, think, and plan and creates the designs. Not only… Read review

SketchUp

SketchUp

(471)4.4 out of 5

Entry Level Price:$299 Single User/Year

The most popular 3D modeling and design tool in the world, SketchUp users model everything from treehouses to intricate, energy-efficient buildings. Owned by Trimble Inc., an entrepreneurial company focused on leveraging technology to change the way the world works, SketchUp is both intuitive and powerful for professionals and creatives of all kinds. The suite of tools within the program enhances workflows and creative concepts across a variety of industries including architecture, engineerin… Show More

Charlotte T.
It provides smart and easy ways for 3D designing. It provides hundreds of developed and professional extensions. It helps in creating all kind… Read review
Dolores C.
I use it for interior and architectural design, I love that is so easy to use, but the best part is having the furniture from brand houses to… Read review

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Onshape

Onshape

(439)4.7 out of 5

Optimized for quick response
Entry Level Price:$1,500 per user, per year

Onshape is a next-generation SaaS design platform that speeds up product development. It’s an all-in-one system that combines CAD, release management, workflow, collaboration, analytics, admin tools, and an API with more than 50 engineering applications. Onshape helps extended design teams work together faster and helps executives make better business decisions with real-time analytics and unprecedented visibility into their company’s design and manufacturing processes. Thousands of companies … Show More

UM
Access to the learning center, easy to learn Read review
AW
My files are available on every computer, even shared workstations. When volunteering for our local first robotics high school team, we were able… Read review

AutoCAD LT

AutoCAD LT

(189)4.3 out of 5

Entry Level Price:$50 per month

Create precise 2D drawings faster with the easy-to-use drafting tools in Autodesk® AutoCAD LT® software. Share your work with confidence using TrustedDWG™ technology, the original and most accurate way to store and exchange design data. Simplified 2D drafting and documentation tools help you produce detailed technical drawings that you can easily edit and repurpose. Collaborate with colleagues using connected desktop, cloud, and mobile Autodesk® AutoCAD® solutions. AutoCAD LT software – enginee… Show More

Laura C.
This lite version has most of the features of AutoCAD at a reasonable price. It is a solid solution that will take you all the way on your 2D… Read review
UU
LT offers most tools and options at an affordable price for everyone to use. Read review

MicroStation

MicroStation

(241)4.0 out of 5

Entry Level Price:$2,410 USD License

MicroStation’s advanced parametric 3D modeling and intelligent drafting capabilities enable infrastructure professionals of any discipline to collaborate on and deliver projects of any scale and complexity. You and your team can aggregate work in MicroStation, including designs and models created with Bentley’s discipline-specific modeling applications. As a result, you can create comprehensive, multi-discipline BIM models, documentation, and other deliverables. MicroStation and all Bentley BI… Show More

UA
File format remaining the same since V8, federation of files for large projects, workspace and workset control and customisation. Strength, file… Read review
AF
I like its versatility, I use it for 3d drawings for building mechanical equp. and for mapping Read review

Inventor

Inventor

(386)4.3 out of 5

Entry Level Price:$2085 1 year

Autodesk® Inventor® 2021 software provides engineers and designers professional grade design and engineering solution for 3D mechanical design, simulation, visualization, and documentation. With Inventor software, engineers can integrate 2D and 3D data into a single design environment, creating a virtual representation of the final product that enables them to validate the form, fit, and function of the product before it is ever built. Autodesk Inventor includes powerful parametric, direct ed… Show More

Josh W.
the detail you get in the designs with inventor is incredible. With accurate weights in parts and components the program is able to calculate… Read review
SA
Easy way of design by its simplest tools. Autocad users can easily design a model using inventor. Read review

Fusion 360

Fusion 360

(326)4.5 out of 5

Entry Level Price:$495 

Fusion 360 is for product designers, mechanical engineers, electrical engineers, and machinists. It unifies design, engineering, PCB design, and manufacturing into a single platform. It allows you to connect your disconnected product development process to deliver high-quality products to market faster and positively impact your bottom line. Fusion 360 is a fully integrated CAD, CAM, PCB, and CAE software that includes generative design, 2.5, 3, 4, & 5 axis machining, and advanced simulati… Show More

Antariksh A.
This software has the free version which is best suited for students and teachers for initial learning. Hence this software can be used in colleges… Read review
UE
Fusion 360 is easy to learn and there is a lot of support on-line. Additionally, it is feature rich for the price. And for me, it works on my Mac. Read review

DraftSight

DraftSight

(89)4.1 out of 5

Entry Level Price:$99 per year

A feature-rich 2D and 3D CAD solution for architects, engineers and construction service providers, as well as professional CAD users, designers, educators and hobbyists. DraftSight lets you create, edit, view and markup any kind of 2D and 3D DWG file with greater ease, speed and efficiency. Its familiar user interface facilitates a quick transition from your current CAD application.

Jishnu G.
It’s just awesome software with all 2D commands and features like AutoCad, priced at a reasonable tag. Read review
UI
-The interface and command structure is so similar to AutoCAD that adoption is very easy. The learning curve is minimal and the only real… Read review

Solid Edge

Solid Edge

(162)4.1 out of 5

Optimized for quick response
Entry Level Price:$75 / seat / month

Solid Edge is a portfolio of affordable, easy to deploy, maintain, and use software tools that advance all aspects of the product development process – mechanical and electrical design, simulation, manufacturing, technical documentation, data management, and cloud-based collaboration. Developed on Siemens industry leading technologies, Solid Edge provides the most innovative and comprehensive approach to product development for the mainstream market.

CO
-Modeling is very simple -View control is simple -Has options that allow saving time -A very good rendering capabilities -3D sketching is also nice Read review
UA
Interface is easy to use , great support for number of users and also used in universities to expose us first to it Read review

BricsCAD

BricsCAD

(54)4.5 out of 5

Entry Level Price:350 USD /user/year

BricsCAD the first all-in-one CAD design solution in .dwg that answers all your needs; 2D drafting, 3D modeling, mechanical design, and BIM. The BricsCAD® family of products brings a cost-effective, multi-platform CAD solution to Windows, macOS, and Linux. BricsCAD is available as a permanent/perpetual license & subscription license, for networked or stand-alone computers. You can also add Maintenance for ease of keeping up-to-date. Familiarity for other CAD users and full LISP support c… Show More

UA
I like the simplicity of the software. I also like that it imitates autocad Read review
AC
It has enough tools to use it in topography, engineering and GIS. Unlike other CAD programs, for its price Briscad offers enough possibilities! Read review

CMS IntelliCAD

CMS IntelliCAD

(50)4.7 out of 5

Entry Level Price:$179.95 Per user

CMS IntelliCAD® is the intelligent, powerful and affordable full-featured CAD Software providing extended customization. CMS IntelliCAD offers a full suite of 2D and 3D Autodesk® AutoCAD® compatible drawing tools! It is the smartest choice for engineers, architects and consultants, or anyone who communicates using CAD drawings. It is designed to give you the best unrivaled compatibility and a true CAD Software alternative providing an extensive programming toolkit for LISP, VBA .Net and IRX dev… Show More

UE
The most helpful about CMS IntelliCAD is you can easily learn and use it. The best part for me is it has drawing templates you can use…. Read review
Shakir I.
Wow! I never thought I could ever get so powerful alternative to AutoCAD and that too so affordable. I am a seasoned user of AutoCAD since 1998 and… Read review

ActCAD is a 2D Drafting and 3D Modeling CAD software meant for Engineers, Architects and other technical consultants. ActCAD is a native DWG & DXF CAD software to create and edit drawings. ActCAD is based on the technologies from IntelliCAD Technology Consortium (ITC), ODA Teigha Libraries, ACIS 3D Kernel, Wintopo, ps2edit etc. ActCAD uses the most recently released version of IntelliCAD to offer the best performance and features to its users. ActCAD as many add-on commands and features sup… Show More

GB
This CAD software has all you need for the design, the commands are like the de facto CAD standard, the GUI is easy to use and there is the LISP… Read review
MN
Wery stable and user-friendly. Supports every .dwg drawing Read review

TurboCAD

TurboCAD

(30)4.3 out of 5

Entry Level Price:$149.99 

TurboCAD Pro Platinum is a professional 2D/3D CAD application that offers a great collection of 2D/3D design tools to design, modify, present, and document in an integrated fashion. An optional AutoCAD®-like 2D drafting interface with command line and dynamic input cursor helps professionals already familiar with AutoCAD easily get up to speed. Advanced technology —a powerful drafting palette, D-Cubed constraints, and ACIS® engine—enhance productivity. Advanced architectural and mechanical de… Show More

JL
There are three versions of the program: Deluxe, Professional and Platinum. The Deluxe version has a list price of $130. It can design objects… Read review
Adam F.
The price point is nice for small companies that need 3D models to be relevant in the industry. Read review

nanoCAD

nanoCAD

(22)4.2 out of 5

nanoCAD Plus is a professional grade CAD tool. It has a familiar interface, powerful drafting and design tools, native DWG compatibility, and an open API. It is available through a low-cost annual subscription, including updates and priority online support.

MS
I like the nice interface of nanoCAD. All tools for drafting and designing are very sharp and easy to use. Mechanical Designs are very easy to make… Read review
HO
Nonocad is very easy to use, its free to use by anyone who wants to design and model things. The user interface is easy as well to use. It’s… Read review

Autodesk Architecture, Engineering & Construction Collection

Autodesk Architecture, Engineering & Construction Collection

(21)4.5 out of 5

Entry Level Price:$7,630 Only $211.94/Month

Integrated BIM tools for building design, civil infrastructure, and construction. Get access to a set of integrated tools that equip you to meet any project challenge – now and in the future. Use powerful BIM and CAD workflows enabled by a comprehensive set of software and services to deliver your best work and stay competitive. Why a collection? • Be ready for anything with a full set of BIM tools Get an essential set of tools, including Revit and AutoCAD, at a great price. And with access … Show More

UA
Great functional package with great price. Read review
DL
One stop shop for all the applications needed to provide services to my clients. Read review

Autodesk Product Design & Manufacturing Collection

Autodesk Product Design & Manufacturing Collection

(9)4.3 out of 5

Entry Level Price:$325 Single License

Design and make your products with our best Inventor, including in-canvas workflows for design, advanced simulation, 5-axis CAM, nesting, and factory layout. You also get access to the full breadth of specialized toolsets available with AutoCAD, along with new cloud-based technologies like Fusion 360. Why a collection? Professional-grade design and manufacturing Design and make your products with the full collection of tools that work inside Inventor, including Inventor Nastran, Inventor CAM,… Show More

Audrey G.
Autodesk Product Design & Manufacturing Collection its a flexible and unique solution with effective results on various areas, like easy product… Read review

Ares Commander

Ares Commander

(3)5.0 out of 5

THE ARES TRINITY OF CAD SOFTWARE: Modern DWG Editing for Desktop, Mobile and Cloud Create and modify DWG drawings anywhere, on any device, and enjoy unrivaled flexibility Much more than a cost-effective alternative for CAD in DWG, our Trinity concept combines the strengths of desktop computers, mobile devices and cloud computing into a unique ecosystem. With ARES Commander, you keep the ability to work offline on your main computers as usual. With ARES Kudo and ARES Touch you further add the… Show More

Doug J.
Inexpensive Fully-featured Integrates directly with Onshape Solid mobile and web capabilities Easy transition for AutoCAD users Read review

Shapr3D

Shapr3D

0 ratings

Entry Level Price:$0 

Shapr3D is the first professional 3D modeling app for iPad and Apple Pencil, now also available on macOS. It offers a quick but precise way to create solid models. Fueled by the same geometric modeling engine as SolidWorks, we bring you the power of MCAD and the ease of use of SketchUp, right on your Apple devices. Perfect for engineers, industrial designers, manufacturers, and other design professionals, as well as 3D hobbyists. Regardless of your level of experience, you will find Shapr3D ea… Show More