Open-Source Alternatives to Tinkercad

Chili3D is a browser-based parametric 3D modeling tool that uses boundary representation (B-Rep) to define and manipulate precise solid geometry. It functions as a constructive solid geometry (CSG) engine, combining primitive shapes through union, difference, and intersection operations, while also serving as a parametric constraint system that maintains geometric relationships and dimensions through adjustable parameters. The software distinguishes itself by running entirely in a web browser without requiring installation, while providing industry-standard CAD file format support for importi

OpenSCAD is a script-based 3D modeler and parametric CAD tool that generates three-dimensional solid objects from programmable scripts. It utilizes a constructive solid geometry engine to create complex shapes by performing boolean operations on basic geometric primitives. The system functions as a compiler that transforms a functional language into geometric representations, allowing for precise dimensional control through variables and functions. It features a WebAssembly implementation that enables the geometry pipeline to execute directly within web browsers. The software covers a broad

This project is a web-based 3D architectural editor used for creating and sharing building projects. It functions as a core architectural engine that combines a GPU-accelerated web renderer with parametric 3D design tools to visualize and navigate complex models within a browser. The editor features a parametric geometry engine that automates the creation of mitered wall corners and cutouts for doors and windows. It includes an IFC model importer to convert Industry Foundation Classes files into editable 3D scenes and a hierarchical spatial manager to organize building elements from the site

FreeCAD is an open-source engineering design suite designed for parametric 3D modeling, architectural planning, and mechanical assembly. It functions as a professional-grade platform that utilizes history-based operations to allow for non-destructive design updates, enabling users to construct complex geometry through a sequence of constrained sketches and solid operations. The platform distinguishes itself through a highly modular, workbench-based architecture that allows users to tailor the interface and toolsets to specific engineering domains. It features deep Python integration, which se

SolveSpace is a parametric CAD software and 3D solid modeler. It functions as a constraint-based geometry solver that allows for the creation of 2D and 3D models where positions and sizes are driven by geometric rules and mathematical relationships. The project distinguishes itself by integrating a mechanical linkage simulator for analyzing the motion of pin and ball joints and a G-code generator that produces CNC machining instructions with cutter radius compensation. It also includes tools for kinematic simulation, allowing users to trace the motion paths of components and export coordinate

CadQuery is a programmatic 3D modeling library and parametric CAD framework that allows for the generation of complex geometric solids and assemblies using a fluent Python API. It functions as a B-Rep geometry engine, enabling the construction of models through code rather than a graphical user interface. The project is built on the Open CASCADE Technology kernel and utilizes a method-chaining API to link geometric commands in sequence. It distinguishes itself through a workplane-based coordinate system and a powerful selection system that uses topological and spatial filtering to target spec

Fritzing is electronic circuit design software used for documenting hardware builds. It functions as a hardware documentation tool and a printed circuit board layout tool, allowing users to create visual representations of circuits through breadboard, schematic, and board views. The software includes a dedicated electronic component modeler for creating digital representations and custom parts for component libraries. It supports a full manufacturing workflow, enabling the translation of digital circuit sketches into professional board orders through integrated production services. The appli

Pts is a TypeScript creative coding library and data visualization framework designed for building generative art and interactive visuals. It functions as a multi-target graphics engine that outputs visual commands to HTML5 Canvas and SVG through a single unified interface. The toolkit serves as a linear algebra visualization tool, providing mathematical primitives for spatial transforms and geometric calculations. This allows for the creation of algorithmic patterns and the simulation of geometric behaviors. The framework covers a broad capability surface including the design of interactive

The Powder Toy is a C++ physics engine and material simulation software that operates as a falling sand physics sandbox. It provides a simulation environment where solids, liquids, and gases interact based on heat, pressure, and velocity. The project is a scriptable sandbox environment, offering an external scripting interface and behavioral scripting to modify game mechanics, automate tasks, and define custom simulation logic. The software supports the construction of complex machinery, physical structures, and functional logic circuits through simulated electronic components and sensors. I

QCAD is a professional two-dimensional computer-aided drafting application designed for creating technical drawings, engineering schematics, and architectural plans. It provides a comprehensive suite of geometric construction and modification tools that allow users to draft precise layouts while managing complex project structures through layers, blocks, and part libraries. The software distinguishes itself through an integrated scripting framework that enables users to automate repetitive design tasks and develop custom tools to extend core functionality. It also functions as a manufacturing

CGAL is a software library that provides a comprehensive collection of computational geometry algorithms and data structures. It is built around a geometry kernel that defines fundamental geometric primitives and operations, enabling the construction of complex geometric objects and the computation of geometric predicates with exact arithmetic for reliable results. The library covers a wide range of geometric computation capabilities, including the construction of convex hulls, triangulations of point sets, and the generation of Voronoi diagrams. It also supports the processing of polygonal m

A-Frame is a declarative 3D scene engine and WebXR framework used to build virtual and augmented reality experiences directly in the web browser. It utilizes an entity component system where generic objects are assigned behaviors through attachable components and lifecycle hooks. The framework allows the assembly of immersive environments using HTML-like markup to define geometries, lighting, and materials. It implements WebXR standards to ensure consistent playback across different hardware and browsers, including support for VR headsets, desktops, and mobile devices. The system covers a br