Alternatives to Autodesk Fusion in 2026

FreeCAD FreeCAD

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

Complete system Production-ready Engineers, makers or small firms need free parametric CAD without SolidWorks or Fusion licences.

★ 35k LGPL-2.1 C++ Active, pushed today

Editor pascalorg

Open-source 3D architectural editor with a local CLI, MCP tools, and practical workflows for humans and AI agents.

Complete system Usable You want to sketch building layouts in 3D and let AI agents help.

★ 25k MIT TypeScript Active, pushed today

Text-to-cad earthtojake

Design physical products with AI

Integration Experimental You design simple mechanical parts and want an AI agent to produce manufacturable files.

★ 25k MIT Python Active, pushed today

SolidCraft tangency-labs

SolidCraft: an open-source parametric 3D CAD application built in pure Rust. Desktop, web, and automation through MCP.

Complete system Experimental You want to try a new open parametric CAD tool for hobby parts.

★ 13k Apache-2.0 Rust Active, pushed today

CADAM Adam-CAD

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

Complete system Usable Makers want quick printable parts from a description and simple parameter tweaks.

★ 5.4k GPL-3.0 TypeScript Active, pushed 19 days ago

Chili3D xiangechen

A browser-based 3D CAD for AI-assisted, parametric and direct modeling.

Complete system Usable You want real B-rep CAD in a browser without installing anything.

★ 5k AGPL-3.0 TypeScript Active, pushed yesterday

SolveSpace solvespace

Parametric 2d/3d CAD

Complete system Production-ready You want a small, fast constraint-based CAD tool for simple mechanical parts.

★ 4.2k GPL-3.0 C++ Active, pushed 2 days ago

Atopile atopile

Design circuit boards with code! ✨ Get software-like design reuse 🚀, validation, version control and collaboration in hardware; starting with electronics ⚡️

Developer tool Usable Your hardware team wants software-style reuse, validation and version control for electronics.

★ 4k MIT Python Active, pushed 19 days ago

OpenCADStudio HakanSeven12

A CAD application built with Rust — 2D/3D drawing, DWG/DXF support, and GPU-accelerated rendering

Complete system Experimental You need a free tool to open and edit DWG or DXF drawings and accept a young project.

★ 3.8k GPL-3.0 Rust Active, pushed today

Build123d gumyr

A python CAD programming library

Building block Usable You prefer to model parts in Python code for reuse, version control and parametric families.

★ 3.6k Apache-2.0 Python Active, pushed today

OCCT Open-Cascade-SAS

Open CASCADE Technology (OCCT) is an open-source software development platform for 3D CAD, CAM, CAE.

Building block Production-ready You are building CAD, CAM or CAE software and need an open B-rep kernel.

★ 3.1k LGPL-2.1 C++ Active, pushed 13 days ago

Kicad-source-mirror KiCad

This is an active mirror of the KiCad development branch, which is hosted at GitLab (updated every time something is pushed). Pull requests on GitHub are not accepted or watched.

Complete system Production-ready Engineers or companies want professional PCB design without Altium licences.

★ 3.1k GPL-3.0 C++ Active, pushed today

LibrePCB LibrePCB

A powerful, innovative and intuitive EDA suite for everyone!

Complete system Usable Beginners or hobbyists want a simpler PCB tool than KiCad.

★ 3k GPL-3.0 C++ Active, pushed today

Tscircuit tscircuit

Create real electronics with Typescript and React

Developer tool Usable Software developers want to design PCBs in code with AI coding tools.

★ 2.9k MIT TypeScript Active, pushed today

Astral3D mlt131220

基于Vue3 + THREE.JS 免费开源的三维引擎及配套编辑器，包含BIM轻量化、CAD解析预览、粒子系统、插件系统等功能。 A free and open-source 3D engine based on Vue3 + THREE.JS and its accompanying editor, featuring functions such as BIM lightweighting, CAD parsing preview, particle system, and plugin system.

Complete system Usable A Chinese-speaking team needs a browser 3D scene editor for BIM or digital twin projects.

★ 2.5k Apache-2.0 JavaScript Active, pushed 3 days ago

Mayo fougue

3D CAD viewer and converter based on Qt + OpenCascade

Complete system Usable You need to view or convert CAD files without a full CAD package.

★ 2.3k BSD-2-Clause C++ Active, pushed 5 days ago

Dune3d dune3d

3D CAD application

Complete system Usable You design enclosures or simple parts and find FreeCAD and SolveSpace awkward.

★ 2.1k GPL-3.0 C Active, pushed 16 days ago

Maker.js microsoft

📐⚙ 2D vector line drawing and shape modeling for CNC and laser cutters.

Building block Usable You generate cut paths or parametric 2D drawings in Node.js or the browser.

★ 2k Apache-2.0 TypeScript Active, pushed 4 days ago

Pythonocc-core tpaviot

Python package for 3D geometry CAD/BIM/CAM

Building block Production-ready You build CAD or engineering tools in Python and need full OpenCascade access.

★ 2k LGPL-3.0 SWIG Active, pushed today

SolidWorks Automation Skill wzyn20051216

Reliable AI Skill + MCP toolkit for agent-driven desktop CAD automation.

Integration Experimental You run SolidWorks on Windows and want agents to automate repetitive modelling or drawing tasks.

★ 1.7k MIT Python Active, pushed yesterday

Truck ricosjp

Truck is a Rust CAD Kernel.

Building block Experimental You are building Rust or WebAssembly CAD software and want a native kernel rather than OpenCascade bindings.

★ 1.7k Apache-2.0 Rust Active, pushed yesterday

LibreDWG LibreDWG

Official mirror of libredwg. With CI hooks and nightly releases. PR's ok

Building block Usable You need to process DWG files in open-source software and GPL is acceptable.

★ 1.7k GPL-3.0 C Active, pushed today

CascadeStudio zalo

A Full Live-Scripted CAD Kernel in the Browser

Developer tool Usable You want scripted CAD in a browser with full B-rep operations like fillets and sweeps.

★ 1.5k MIT JavaScript Active, pushed 14 days ago

Openharness autonomous-ai

The ultimate harness for coding agents and beyond. All your agents. All your machines. One command center. Start with code, then follow your curiosity and build across disciplines: CAD, circuits, robots, games and music.

Developer tool Experimental You run several AI coding agents on multiple machines and want one place to supervise them.

★ 1.4k MIT TypeScript Active, pushed today

CQ-editor CadQuery

CadQuery GUI editor based on PyQT

Developer tool Usable You model parts in CadQuery and want a dedicated viewer next to your code.

★ 1.3k Apache-2.0 Python Active, pushed 21 days ago

Cad-viewer mlightcad

The world’s first fully web-based DXF/DWG viewer and editor that runs entirely in the browser — no backend server required.

Building block Usable Your web app needs to display or lightly edit AutoCAD drawings without a server.

★ 1.2k MIT TypeScript Active, pushed today

GDSFactory gdsfactory

A Python library for designing chips (Photonics, Analog, Quantum, MEMS), PCBs, and 3D-printable objects. We aim to make hardware design accessible, intuitive, and fun—empowering everyone to build the future.

Building block Production-ready A photonics or chip team wants code-driven, reproducible layouts integrated with KLayout and simulators.

★ 1.1k MIT Python Active, pushed yesterday

Multi-Agent CAD Pan-Chera

MAC (Multi-Agent CAD): A decoupled multi-agent framework for text-to-CAD generation via constrained test-time compute

Framework or platform Experimental You research or prototype text-to-CAD for assemblies and can run LLMs locally or via API.

★ 1.1k MIT Python Active, pushed 5 days ago

OpenConstructionERP datadrivenconstruction

Open-source construction ERP - BOQ, PDF/CAD/BIM takeoff, AI cost matching, 293 guided cases. 120,000+ priced positions, 44 languages, 190+ modules, cost data for 40+ markets. AGPL-3.0. pip install openconstructionerp

Complete system Experimental A construction estimator or small contractor wants to trial open-source BOQ and takeoff tools with bundled cost data.

★ 1.1k AGPL-3.0 TypeScript Active, pushed 5 days ago

ACadSharp DomCR

C# library to read/write cad files like dxf/dwg.

Building block Usable A .NET application must read or generate AutoCAD drawings without an AutoCAD licence.

★ 912 MIT C# Active, pushed yesterday

AutoCAD Autodesk

Computer-aided design and drafting software

Complete system Production-ready You produce technical drawings in architecture, engineering or construction and must exchange DWG files with others.

3.7k readers a month Since 1982 Commercial

SketchUp Trimble Inc.

Architectural 3D modelling CAD software

Complete system Production-ready Architects, builders or designers need quick 3D concept models rather than full engineering CAD.

3.5k readers a month Since 2000 Commercial

Autodesk Maya Autodesk

3D computer graphics software

Complete system Production-ready You work in or train for film, TV or game animation pipelines where Maya is the expected tool.

2.7k readers a month Since 1998 Commercial

SolidWorks Dassault Systèmes

Desktop software for 3D modeling

Complete system Production-ready A manufacturing or product engineering business designs mechanical parts and wants the most common desktop CAD for hiring and suppliers.

1.9k readers a month Since 1995 Commercial

Onshape PTC

Onshape is the most customizable production CAD system. Cloud-native CAD and built-in PDM with AI-powered customization, on any device, with zero IT required.

Complete system Production-ready A product team wants mechanical CAD without installs or file juggling, and values branching and real-time collaboration.

800 readers a month Commercial