Free CAD Software for Windows

A versatile open-source 3D CAD modeler with modular architecture, suitable for engineering applications across multiple platforms, supporting Python scripting.

LibreCAD is an open source 2D CAD application for Windows, Apple and Linux. It is based on Qt, which is a leading cross-platform application and UI development framework.

KiCad is an open source software suite for electronic design automation (EDA) - designing schematics of electronic circuits and printed circuit boards (PCB). KiCad is developed by Jean-Pierre Charras. And features an integrated environment between schematic capture, bill of...

OpenSCAD is a software for creating solid 3D CAD objects. It is free software and available for Linux/UNIX, MS Windows and MacOS.

Dune 3D operates as a parametric 3D Computer-Aided Design (CAD) software. It provides users with the capability to sketch and constrain both in 2D and 3D dimensions. Furthermore, it allows for the addition of chamfers and fillets to designs.

Integrated CAD, CAM, and CAE platform with cloud-based modeling, simulation, and manufacturing tools plus collaborative features. Free licenses for students, hobbyists, and startups.

BRL-CAD is a powerful cross-platform open source solid modeling system that includes interactive geometry editing, high-performance ray-tracing for rendering and geometric analysis, image and signal-processing tools, a system performance analysis benchmark suite, libraries for...

LibrePCB is a free EDA software to develop printed circuit boards. It’s currently under heavy development to bring out first stable releases as soon as possible.

CAD Sketcher is a free and open-source project looking to enhance precision workflows in Blender by bringing CAD like tools, features and usability to Blender.

From design to manufacturing. Teams collaborate with more impact. Instinctive design meets multidevice capability and full interoperability for the ultimate 3D design workflow.

SolveSpace is a parametric 3D CAD program with extrude, revolve, union and difference functions. Save/Export as DXF, PDF, SVG, STL, STEP. Mesh generation expected by most 3d printers. Constraint solver point tracing for motion analysis.

QCAD is an application for computer aided drafting in 2D. With QCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schemas and diagrams.

LeoCAD is a CAD program for creating virtual LEGO models. It has an easy to use interface and currently includes over 6000 different pieces created by the LDraw community.

QElectroTech is a free software to create electric diagrams. QElectroTech is under GNU/GPL license. It is currently available for Windows, Mac OS and Linux.

The professional furnishing 2D-/3D-tool for everybody: The pCon.planner is a cost-free application allowing you to comfortably and professionally create complex furnishing concepts and to visualize them in a photo-realistic quality. File Formats: dwg, dxf, 3ds, skp, ... Language.

CaDoodle is a local drag-and-drop CAD application for Linux (Arm,x86), WIndows (X86), and Mac (Arm,x86) and ChromeOS. Users models are stored locally, and the application runs entirely locally. CaDoodle has a drag and drop interface that is cross-trainable with TinkerCAD.

An add-on for beautiful, detailed, and data-rich OpenBIM with Blender. It was named BlenderBIM until 2024. It uses the ifcopenshell.

Blender CAM is an open source solution for artistic CAM - Computer aided machining - a g-code generation tool.

Blender CAM is an add-on for the free open-source Blender 3d package.

Free STP Viewer - free software that lets you view 3D STEP files (.stp, .step file format).

LDraw is an open standard for LEGO CAD programs that allow the user to create virtual LEGO models and scenes. You can use it to document models you have physically built, create building instructions just like LEGO, render 3D photo realistic images of your virtual models and...

DesignSpark Mechanical is a 3D modeling software reported to be easy to use so that all engineers will be able to create and share models.

Sverchok is a parametric tool for architects and designers. You can use it to program objects' shapes without knowing any programming languages.

SALOME can be used as standalone application for generation of CAD models, their preparation for numerical calculations and post-processing of the calculation results. SALOME can also be used as a platform for integration of the external third-party numerical codes to produce a...

For more than 20 years being always at the forefront of 3D, Open Cascade has gained considerable expertise in geometric modeling. In order to demonstrate software developing capabilities the company decided to come up with a sample of parametric CAD modeler — CAD Builder.

MLCad (Mike's Lego CAD) is a powerful CAD system specifically designed to create building instructions as known from Lego, for your own Lego models and creations. MLCad reads and writes LDraw (a program of James Jessiman) compatible files but in an extensive window based...