FreeCAD ou AutoCAD : une bonne alternative sous Linux ?

FreeCAD, alternative Linux à AutoCAD

Mis à jour le 21 octobre 2026

Notre avis

FreeCAD is a strong, free alternative for 3D parametric modeling and technical drawings, but it is not a direct drop-in replacement for AutoCAD. It excels in mechanical design and engineering workflows where parametric history is key. For pure 2D drafting, it feels less intuitive than AutoCAD. If you need DWG compatibility or heavy 2D layer management, you might struggle. However, for 3D solid modeling, FEA, and generating drawings from 3D models, FreeCAD is a capable, open-source choice that covers most engineering needs without a license fee.

Couverture fonctionnelle65%

Licence: LGPL-2.1
Prix: Gratuit
Dernière version: 1.1.4 (28 septembre 2026)
Note: —

Installer FreeCAD Site officiel ↗

Part Design

Ce qui fonctionne pareil

Supports 2D sketching with geometric constraints
Generates 2D technical drawings from 3D models
Offers Python scripting for automation and custom tools
Handles complex 3D solid modeling operations

Ce qui change

Lacks native DWG import/export; relies on DXF or ODA converters
2D drafting workflow is less mature and intuitive than AutoCAD
No official commercial support or guaranteed SLA
Interface is more complex for simple 2D tasks due to parametric focus

Ouvrir vos fichiers AutoCAD

FreeCAD does not natively support the proprietary DWG format. You can import and export DXF files, which is a common workaround, but complex 2D drawings may lose layers or attributes during conversion. For 3D data, FreeCAD handles STEP, IGES, and STL well. If you must exchange DWG files, you will likely need a third-party converter like ODA File Converter or LibreCAD as an intermediary.

Passer de AutoCAD à FreeCAD, étape par étape

Install FreeCAD via your package manager or Flatpak
Convert existing DWG files to DXF using a converter tool
Import DXF files into FreeCAD and verify layer integrity
Rebuild critical 2D sketches using the Sketcher workbench for constraints
Set up a Python script to automate repetitive drawing tasks

Fonctionnalités clés de FreeCAD

Modélisation paramétrique avec arbre d’historique
Support STEP, IGES, STL, DXF, OBJ, IFC, SVG
Esquisse 2D intégrée avec contraintes
Programmation Python pour l’automatisation
Bancs de travail FEA, BIM, CAM, simulation robotique
Add‑ons et macros de la communauté
Installation multiplateforme via Flatpak, AUR, Debian, OpenSUSE

Installer FreeCAD sous Linux

Flatpak (Flathub)flatpak install flathub org.freecad.FreeCAD

Debiansudo apt install freecad

Arch / Manjarosudo pacman -S freecad

openSUSEsudo zypper install FreeCAD

Questions fréquentes

Can FreeCAD open DWG files directly?

No, FreeCAD does not natively support DWG. You must convert DWG to DXF first using an external tool before importing into FreeCAD.

Is FreeCAD good for 2D architectural drafting?

It is possible but not ideal. The 2D workflow is less streamlined than AutoCAD. For pure 2D drafting, LibreCAD or QCAD might be better suited.

Does FreeCAD have a parametric history tree?

Yes, FreeCAD is fully parametric. You can modify earlier steps in the design history, and the model updates automatically, which is a key advantage over non-parametric CAD.