CAD Software for Windows

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Browse free open source CAD software and projects for Windows below. Use the toggles on the left to filter open source CAD software by OS, license, language, programming language, and project status.

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  • 1
    FreeCAD

    FreeCAD

    a parametric 3D CAD modeler

    This is an official mirror of FreeCAD. Code and release files are primarily hosted on https://github.com/FreeCAD/FreeCAD and mirrored here. 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. FreeCAD runs exactly the same way on Windows, Mac OSX and Linux platforms.
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    Downloads: 2,915 This Week
    Last Update:
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  • 2
    LibreCAD

    LibreCAD

    Cross-platform Open-source 2D CAD

    LibreCAD is an open-source cross-platform 2D CAD program, which is translated in over 30 languages. LibreCAD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. License: https://www.gnu.org/licenses/gpl-2.0.html Source: https://github.com/LibreCAD/LibreCAD/releases Track the latest development: https://github.com/LibreCAD/LibreCAD/milestones https://github.com/LibreCAD/LibreCAD/commits/master Create bug reports and feature requests: https://github.com/LibreCAD/LibreCAD/issues Get help: - https://forum.librecad.org - https://dokuwiki.librecad.org - https://librecad.readthedocs.io/
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    Downloads: 2,310 This Week
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  • 3
    LeoCAD

    LeoCAD

    A CAD application for creating virtual LEGO models

    Design virtual models you can build with LEGO® bricks. LeoCAD has an intuitive interface that is designed to allow new users to start creating new models without having to spend too much time learning the application. At the same time, it has a rich feature set that enables experienced users to build models by using techniques that are more advanced. LeoCAD is fully compatible with the LDraw Standard and related tools, and it reads and writes LDR and MPD files so that you can share and download models from the Internet. It also uses the LDraw parts library, which has over 10,000 different parts and continues to receive updates. Native versions are available for Windows, Linux, and macOS to ensure that users are familiar with the program interface. LeoCAD is open-source, so anyone can contribute with fixes and features, and it is always going to remain free.
    Downloads: 37 This Week
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  • 4
    dxf2gcode

    dxf2gcode

    DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code

    DXF2GCODE is a tool for converting 2D (dxf, pdf, ps) drawings to CNC machine compatible GCode. Windows, Linux, and Mac support by using python scripting language.
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    Downloads: 300 This Week
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  • 5
    Seamly2D

    Seamly2D

    Free and open source pattern design software

    Seamly2D enables the design, reuse, and remix of digital sewing patterns for creating bespoke-fit, specialty-sized, and ready-to-wear-sized clothing. Users have the right to utilize, sell, share, and distribute their patterns in any way they choose. * Downloads: https://seamly.io * Support: https://forum.seamly.io * Code: https://github.com/fashionfreedom/seamly2d * License: GPLv3+
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    Downloads: 504 This Week
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  • 6
    TexGen
    TexGen is a geometric textile modelling software package to be used for obtaining engineering properties of woven textiles and textile composites. Citing TexGen We would be grateful if you could acknowledge use of TexGen where appropriate and suggest using one of the following references: L P Brown and A C Long. "Modelling the geometry of textile reinforcements for composites: TexGen", Chapter 8 in "Composite reinforcements for optimum performance (Second Edition)", ed. P Boisse, Woodhead Publishing Ltd, 2021, ISBN: 978-0-12-819005-0. https://doi.org/10.1016/B978-0-12-819005-0.00008-3 Lin, H., Brown, L. P. & Long, A. C. 2011. Modelling and Simulating Textile Structures using TexGen. Advanced Materials Research, 331, 44-47. To reference version 3.13.0 please use: Louise Brown, mike-matveev, & georgespackman. (2023). louisepb/TexGen: TexGen v3.13.1 (v3.13.1). Zenodo. https://doi.org/10.5281/zenodo.8221491
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    Downloads: 155 This Week
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  • 7
    CADAM

    CADAM

    CADAM is the open source text-to-CAD web application

    CADAM is an open-source “text-to-CAD” web application that turns natural-language prompts into parametric 3D models, targeting a workflow where you describe what you want and the system produces editable geometry. It is designed around a browser-first experience, so users can iterate quickly without installing a heavyweight desktop CAD suite for every experiment. A key idea is that the generated output is parametric and scriptable, enabling repeatable edits and variations rather than a one-off mesh result. The project integrates modern web tooling and a backend stack to manage sessions, model generation requests, and persisted outputs, making it usable as an actual product rather than only a demo. It’s also built to support an agentic workflow, where the system can refine outputs over multiple steps, bridging the gap between intent (“a bracket with four mounting holes”) and precise geometry.
    Downloads: 14 This Week
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  • 8

    Frame3DD

    Static and Dynamic Structural Analysis of 2D and 3D frames.

    FRAME3DD is a program for the static and dynamic structural analysis of two- and three-dimensional frames and trusses with elastic and geometric stiffness.
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    Downloads: 74 This Week
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  • 9
    PyCAM
    Open Source CAM - Toolpath Generation for 3-Axis CNC machining
    Downloads: 48 This Week
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  • 10
    KiCad EDA

    KiCad EDA

    A Cross Platform and Open Source Electronics Design Automation Suite

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    Downloads: 176 This Week
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  • 11
    ImplicitCAD

    ImplicitCAD

    A math-inspired CAD program in haskell. CSG, bevels, and shells

    ImplicitCAD is a programmatic CAD program, implemented in Haskell. Unlike traditional CAD programs, programmatic CAD programs use text descriptions of objects, as in programming. Concepts like variables, control structures and abstraction are used, just as in programming. With the explosion of 3D printing, designing 3D objects has become an even more important problem. And it's a complicated one. We need to design complicated objects that precisely interface with each other. And often we don't want to just design a single object, but classes of objects, parameterized by variables. And we need to do this in collaboration. Generally, objects in programmatic CAD are built with Constructive Solid Geometry or CSG. Unions, intersections and differences of simpler shapes slowly build the object. ImplicitCAD supports all this and much more! For example, it provides rounded unions so that one can have smooth interfaces between objects.
    Downloads: 6 This Week
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  • 12
    OdooPLM

    OdooPLM

    A Full PLM system based on odoo

    OdooPLM - full open source PLM built on Odoo. 3D models, 2D drawings, BOMs, revisions and documents, versioned. LGPL-3, since 2010 by OmniaSolutions, Official Odoo Partner. YOU DO NOT NEED ODOO AS YOUR ERP. Run it as a standalone PLM beside your existing ERP - Odoo is the platform, not the commitment. Already on Odoo? PLM and ERP share one database. THIS PAGE = WINDOWS CAD CONNECTOR. One build works with every Odoo version (v11+). Download: /files/Client/Stable/ CAD: SolidWorks, Solid Edge, Inventor, ThinkDesign, AutoCAD, DraftSight, FreeCAD, ZwCAD. SERVER MODULES ARE NOT HERE. Install them FIRST: apps.odoo.com/apps/modules/browse?search=omniasolutions github.com/OmniaGit/odooplm DOCKER QUICK START git clone -b 19.0 https://github.com/OmniaGit/odooplm.git addons/odooplm FROM odoo:19.0 + pip3 install -r aaa_requirements.txt Mount ./addons -> /mnt/extra-addons, then: odoo -d DB -i plm,plm_web_3d,plm_automated_convertion Docs: odooplm.omniasolutions.website | info
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    Downloads: 43 This Week
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  • 13
    conducteo

    conducteo

    conducteö - logiciel de calcul des ponts thermiques linéiques

    conducteö est un logiciel de modélisation et de simulation des ponts thermiques linéiques, conforme à la RT 2012 et aux principales normes européennes concernant les ponts thermiques. Code source : https://github.com/c-marcel/conducteo Installeurs Linux/Debian et Windows : https://github.com/c-marcel/conducteo/releases Installeurs macOS : https://github.com/Neocle/conducteo/releases/tag/macOS
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    Downloads: 56 This Week
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  • 14
    An STL format importer/exporter plugin script for Google SketchUp. Supports both binary and ASCII import and export.
    Downloads: 24 This Week
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  • 15
    This small program can help you to calculate optimal cut of rectangular details. It can be used to design cutting out of wood, glass, steel and other material.
    Downloads: 17 This Week
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  • 16
    Open Source Text to CAD Harness

    Open Source Text to CAD Harness

    An open source harness for generating CAD models

    Open Source Text to CAD Harness is an open-source framework that enables the generation of parametric 3D CAD models using natural language prompts interpreted by AI coding agents. It acts as a harness that converts text descriptions into source-controlled CAD scripts, which are then compiled into geometric models using tools like OpenCascade and build123d. The system emphasizes reproducibility by storing CAD logic as editable code rather than opaque binary files, allowing iterative refinement through agent-driven workflows. It includes a local visualization interface called CAD Explorer for inspecting generated geometry and supports multiple export formats for engineering and manufacturing use. The project also integrates modular “skills” for robotics, motion planning, and manufacturing validation, making it highly extensible. Designed to run locally without backend dependencies, it provides a flexible environment for experimentation and production workflows.
    Downloads: 3 This Week
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  • 17
    Impact Finite Element Program
    Impact is an explicit Finite Element Program Suite which simulates dynamic impact events. It has a range of elements, contact handling and different material laws. Models can be created, solved and analyzed with the included pre- and postprocessor. Impact is based on an Explicit Time stepping algorithm. These kind of codes are used to simulate dynamic phenomena such as car crashes and similar, usually involving large deformations.
    Downloads: 15 This Week
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  • 18
    Tochnog Finite Element Analysis
    Explicit/Impicit Finite Element Program with linear/nonlinear, elastic/hyperelastic/hypoelastic/plastic/visco, contact,thermal, fluid capabilities. h/p refinements. Parallel/Distributed solvers available. No shell elements but has 2D beams, trusses.
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    Downloads: 40 This Week
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  • 19
    Universo BIM Control Total

    Universo BIM Control Total

    Control Total es el hub de herramientas BIM

    Control Total es el hub de herramientas BIM que elimina las tareas repetitivas y te devuelve horas de trabajo cada semana.
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    Downloads: 35 This Week
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  • 20
    Libre Mechanics

    Libre Mechanics

    Open Knowledge on engineering development.

    Libre Mechanics it’s an Open Knowledge project created to offer a useful platform of information related with the development and research of Mechanical Engineering themes and similar fields, higly related with the use of Open Source and Software Libre tools. Here you will find a wide variety of projects, publications and scientific material available as references for developing their own projects, also guides and tutorials that allow you to take advantage of free software tools available today. The four principal lines of work are: Design Analysis and Simulation Automation and Robotics Development
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    Downloads: 16 This Week
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  • 21
    CompassCAD NEXT

    CompassCAD NEXT

    The CompassCAD you know and love, just better.

    CompassCAD NEXT is the evolution of the original CompassCAD. Designed from the ground up, everything here is rewritten with new standards, aggressive optimizations that will make your PC comfortable and snappy running CompassCAD NEXT than before. Despite being the next evolution of CompassCAD, CompassCAD NEXT can still open old CompassCAD projects, in which you can work on many legacy projects without a hassle. This project is in a public beta stage. Expect broken stuffs, unpredictable bugs, non-functioning buttons and crappy UX.
    Downloads: 28 This Week
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  • 22
    CIMCO

    CIMCO

    Any tools for CIMCO Software (mostly CIMCO Edit), CIMCO Edit crack

    CTranslate - this is not official tool for edit CIMCO Software language files * MSG directory
    Downloads: 27 This Week
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  • 23

    Control Techniques Software

    CT Soft is software designed to be used with Control Techniques Drives

    CTSoft can be used for configuring the following drives: Digitax ST Base Digitax ST Indexer Digitax ST Plus Digitax ST EZMotion FXMP25 Field Controller Mentor MP Unidrive 'Classic' in open-loop, closed-loop vector and servo modes Unidrive SP open-loop, closed-loop vector servo modes and regen mode Commander SK drives Commander GP20 Drive in open-loop, closed-loop vector Unidrive ES open-loop, closed-loop vector and servo modes Unidrive PV CTSoft system requirements: Pentium IV 1000MHz or better recommended Windows 7, Windows Vista, Windows XP or Windows 2000 is required. Internet Explorer V5 or later should also be installed Absolute minimum of 800x600 screen resolution. 1024x768 is recommended as a minimum. Adobe Acrobat 5.05 or later (for parameter help) 256MB RAM Microsoft .NET Framework Version 2.0 Note that you must have administrator rights to install CTSoft If you have a previous copy of CTSoft installed you must uninstall it first.
    Downloads: 22 This Week
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  • 24
    DSpice

    DSpice

    DSpice: Design and Simulation of Circuits using Spice

    What is DSPICE? DSpice (Designing Circuits and Simulation by SPICE) is an open-source tool designed to streamline the modeling of analog components and the simulation of electronic circuits. It leverages ngspice (the open-source successor to the classic SPICE engine) as its core simulation backend. The main objectives and features of DSpice are: . Custom Modeling: Creating new SPICE models for various electrical components. . Symbol Design: Designing and managing custom schematic symbols for these models. . Schematic Capture: Drawing and designing circuits using an intuitive CAD-style schematic editor. . Circuit Simulation: Executing simulations (OP/Tran) seamlessly using ngspice. . Waveform Visualization: Analyzing and presenting simulation results through a dedicated waveform viewer and Prob. . Licensed under: DSPICE is free to use "MIT"; . Open source;
    Downloads: 12 This Week
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  • 25

    libdxfrw

    library to read dwg & read/write dxf files

    c++ library to read/write DXF files in binary and ascii form and to read DWG from r14 to v2015 Continued at: https://github.com/LibreCAD/libdxfrw
    Downloads: 12 This Week
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