Open Source LibreCAD Alternatives

FreeCAD

FreeCAD is a general purpose parametric 3D CAD modeler. The development is completely Open Source (LGPL License). FreeCAD is aimed directly at mechanical engineering and product design but also fits in a wider range of uses around engineering, such as architecture or other engineering specialties. FreeCAD features tools similar to Catia, SolidWorks or Solid Edge, and therefore also falls into the category of MCAD, PLM, CAx and CAE.

Free Open Source Mac Windows Linux

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BRL-CAD

BRL-CAD is a powerful cross-platform open source solid modeling system that includes interactive geometry editing, high-performance ray-tracing for rendering and geometric analysis, image and signal-processing tools, a system performance analysis benchmark suite, libraries for robust geometric representation, with more than 20 years of active development.

Free Open Source Mac Windows Linux

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Open CASCADE

Open CASCADE Technology is a software development platform freely available in open source. It includes components for 3D surface and solid modeling, visualization, data exchange and rapid application development. Open CASCADE Technology can be best applied in development of numerical simulation software including CAD/CAM/CAE, AEC and GIS, as well as PDM applications. System requirements: http://www.opencascade.org/getocc/require/

Free Open Source Windows Linux

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Linkage Mechanism Designer and Simulator

Linkage is computer aided design software used for quick prototyping of linkage mechanisms. The number of operations needed to add a link and get it connected to other links in the mechanism has been minimized to the lowest number possible, making this program ideal for “throwing together” a working machine. The mechanism is edited and animated in the same window allowing for quick analysis and modification while working on a design. It is simplistic for a CAD program but that is the intent.

Free Open Source Windows

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MakerSCAD

Powerfull 3D design tool for 3D printing, virtual reality and game engine. Exports to STL, OBJ, and HTML5 3D websites.

Freemium $ $ $ Open Source Mac Windows Linux Web Chrome OS

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Piglet Drawing Editor

2-D engineering drawing editor that supports hierarchical object description. It is inspired by Hewlett-Packard's proprietary HP PIGLET (Personal Interactive Graphic Layout EdiTor), which later became the commercial Graffy editor by DURST CAD.

Free Open Source Linux

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SagCAD

Easy to use 2D Computer Aided Drafting and Modelling application. Features: import/export of .dxf files, Ellipse, Polyline, SPLINE, BSPLINE, possibility to glue external programs via shell commands, CAM Module (Generation of ISO NC-Data), Import of NC files, Export of PostScript etc.

Free Open Source Linux

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SAMoCAD

SAMoCAD designed to create simple drawings, primarily to architectural drawings. Development of the program is far from complete, but it is already possible to draw. There is partial DXF format support, at the moment almost all drafted in the program can be saved in DXF and can be opened in AutoCAD (or another CAD). Also can be imported from other programs simple drawings in SAMoCAD. The program can also save drawings in SVG format, which can be viewed in web browsers.

Free Open Source Mac Windows Linux

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Archimedes

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 need and drop the other ones easily.

• Discontinued
  The project seems no longer developed. Last version, 0.66, released in June 2012, can be still downloaded from SourceForge.

Free Open Source Mac Windows Linux

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