Free computer-aided design software

free and open-source 3D computer graphics software

thumb|right|Interior of 3D house thumb|right|Arduino board imported from Eagle PCB software

OpenSCAD is a free software application for creating solid 3D computer-aided design (CAD) objects. It is a script-only based modeller that uses its own description language; the 3D preview can be manipulated interactively, but cannot be interactively modified in 3D. Instead, an OpenSCAD script specifies geometric primitives (such as spheres, boxes, cylinders, etc.) and defines how they are modified and combined (for instance by intersection, difference, envelope combination, or Minkowski sums) to render a 3D model. As such, the program performs constructive solid geometry (CSG). OpenSCAD is av

LibreCAD is a computer-aided design (CAD) application for 2D design. It is free and open-source, and available for Unix/Linux, macOS, and Microsoft Windows operating systems.

QCAD is a computer-aided design (CAD) software application for 2D design and drafting. It is available for Linux, Apple macOS, Unix and Microsoft Windows. The QCAD GUI is based on the Qt framework.

software for modeling and texturing low to mid-range polygon models

free and open-source interior design and home-planning software

open source software package for 3D graphics

BRL-CAD is a constructive solid geometry (CSG) solid modeling computer-aided design (CAD) system. It includes an interactive geometry editor, ray tracing support for graphics rendering and geometric analysis, computer network distributed framebuffer support, scripting, image-processing and signal-processing tools. The entire package is distributed in source code and binary form.

circuit-design system

platform for 3D CAD, CAM, and CAE

program to build models using virtual LEGO bricks

software

partial differential equations which Elmer solves by the Finite Element Method

MeshLab is a 3D mesh processing software system that is oriented to the management and processing of unstructured large meshes and provides a set of tools for editing, cleaning, healing, inspecting, rendering, and converting these kinds of meshes. MeshLab is free and open-source software, subject to the requirements of the GNU General Public License (GPL), version 2 or later, and is used as both a complete package and a library powering other software. It is well known in the more technical fields of 3D development and data handling.

LeoCAD is a free and open-source 3D CAD program for creating virtual Lego models by using parts from LDraw library. It was developed by Leonardo Zide in 1997.

CalculiX is a free and open-source finite-element analysis application that uses an input format similar to Abaqus. It has an implicit and explicit solver (CCX) written by Guido Dhondt and a pre- and post-processor (CGX) written by Klaus Wittig. The original software was written for the Linux operating system in 1998. Convergent Mechanical has ported the application to the Windows operating system.

Sunflow is an open-source global illumination rendering system written in Java. The project is currently inactive; the last announcement on the program's official page was made in 2007.

free CAD software

thumb|Hart's A-frame created in SolveSpace. SolveSpace is a free and open-source 2D/3D constraint-based parametric computer-aided design (CAD) software that supports basic 2D and 3D constructive solid geometry modeling.