Free, offline, Onshape-style parametric CAD. Sketch, model, assemble, make 2D drawings (PDF / AutoCAD DXF) and sheet-metal flat patterns, all on your own computer, no account or cloud.
United Kingdom




The best open source alternative to FreeCAD is LibreCAD. If that doesn't suit you, our users have ranked more than 100 alternatives to FreeCAD and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to FreeCAD are Hew, CADCraft, OpenSCAD and FluidCAD.
Free, offline, Onshape-style parametric CAD. Sketch, model, assemble, make 2D drawings (PDF / AutoCAD DXF) and sheet-metal flat patterns, all on your own computer, no account or cloud.




Varkon is a very powerful parametric 2D/3D CAD, modeling and application development tool for engineering, design, architecture, etc. It does 2D drafting, 2D and 3D modeling, sculptured surface modeling, and even animations.

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.



Impact is an explicit Finite Element Program Suite which simulates dynamic impact events. It has a range of elements, contact handling and different material laws. Models can be created, solved and analyzed with the included pre- and postprocessor.


pythonOCC is a 3D CAD/PLM development library for the Python programming language. It provides 3D hybrid modeling, data exchange (support for the STEP/IGES file
gCAD3D is a 3D CAD CAM application that features an integrated 3D OpenGL viewer, a program interpreter for geometry and NC-commands in 3D, an integrated NC-processor, and a programming interface for user programs.



HeeksCAD is a free, open source, CAD application - Imports solid models from STEP and IGES files. Draws construction geometry and lines and arcs. Creates new primitive solids, or make solids by extruding a sketch or by making a lofted solid between sketches.



Archimedes is a free and open source CAD (Computer Aided Design) software. It is a robust system built over Eclipse’s Rich Client Java Platform fully based on plug ins. This means it is easily extensible but also has a pretty thin core that allows you to select the features you...





A free, privacy-first in-browser 3D CAD modeler featuring Dual CAD architecture (OpenCASCADE B-Rep and mesh CSG), 2D constraint solving, kinematic assemblies, and an on-device local AI assistant.

