Open Source Windows CAD Software
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CAD Software for Windows
View 176 business solutionsBrowse 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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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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CADCraft
CADCraft: computer-aided design and drafting
CADCraft is an open-source 2D drafting application written in pure Rust as a clean-room reimplementation of familiar AutoCAD workflows. It provides a command line, object snaps, polar tracking, layers, dimensions, hatches, blocks, layouts, plotting, and parametric constraints. Drawing and modification commands cover lines, polylines, circles, splines, offsets, trimming, arrays, grips, and many other common CAD operations. DXF files from R12 through 2018 are handled natively, while DWG support is provided through the open-source acadrust library. Paper space, viewports, page setups, PDF plotting, SVG export, and PNG export are also available. Every CAD operation can be driven through the UI, CLI, JSON control channel, or MCP server. Native builds target macOS, Windows, Linux, and FreeBSD, with a WebAssembly version for browsers. -
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VirtualSatellite
Virtual Satellite
Virtual Satellite is a DLR open source software for model based systems engineering MBSE. One of the major features of Virtual Satellite is the modular data model, that can be easily customized to your personal needs. Today, there are already various different versions: - Virtual Satellite 4 - Core is the entry point to start developing and the basis for all other versions - Virtual Satellite 4 - CEF is a specialized version for the use in our Concurrent Engineering Facility - Virtual Satellite 4 - FDIR is a research version for Failure Detection, Isolation and Recovery - Virtual Satellite 4 - DEV IDE is a spezial Eclipse IDE for easy and fast VIrtual Satellite development. This project contains the deployed artefacts from the Virtual Satellite Eco-System. Donwnloads for Virtual Satellite 4 Core are also provided. The artefacts contain p2 builds for: - Daily development builds - Regular integration builds - Specific release builds -
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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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SolidCraft
SolidCraft: an open-source parametric 3D CAD application
SolidCraft is an open-source parametric 3D computer-aided design application built entirely in Rust for mechanical modeling and engineering workflows. It allows users to create constrained sketches and transform them into editable solid models through operations such as extrusion, filleting, and shelling. A parametric feature timeline preserves modeling history and automatically rebuilds geometry when dimensions change. The software supports assemblies, reusable parameters, and geometric measurements. It runs on Windows, macOS, Linux, and web browsers without requiring proprietary CAD infrastructure. A command-line interface enables scripted modeling, rendering, and file exports. SolidCraft also includes a Model Context Protocol server that allows AI agents to create, inspect, and modify designs through structured commands. Its architecture supports interactive design and automated engineering workflows. -
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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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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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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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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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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. -
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Open Source CAM - Toolpath Generation for 3-Axis CNC machining
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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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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. -
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An STL format importer/exporter plugin script for Google SketchUp. Supports both binary and ASCII import and export.
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KiCad EDA
A Cross Platform and Open Source Electronics Design Automation Suite
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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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The 1-dimensional gas-dynamics code. More information in http://www.openwam.com Modeling is an important technique for the optimization of internal combustion engines (ICE). The use of calculation models together with experimental tests is producing unquestionable successes due to the fact that both techniques complement each other. 1D wave action models simplify the engine by means of ducts, where only one dimension is considered, and volumes where mass accumulation is considered and the gas properties are uniform in the entire element. Finally, non dimensional models are used to solve connections between 1D and 0D elements. Thanks to more than 20 years, more than 10 PhD Thesis and many research projects and publications, CMT-Motores Térmicos has developed an own 1D gasdynamic tool called OpenWAMTM which gathers an important know-how on air management, compressible flow, turbocharging, chemical species tracking, numerical analysis and many other aspects of engine modeling.
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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. -
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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.
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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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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; -
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Voxel CAD. Open source voxel editing and analyzing software. Edit and create multi-material voxel objects. Simulate the dynamics in a quantitative physics sandbox to test engineering designs or make moving creatures. www.voxcad.com for videos.
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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 -
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Make sure to download from the link below and not the big giant button. I'm not sure how to fix that, so if you know!
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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.
