FreeCAD1.0

FreeCAD is a free and open source three-dimensional parametric CAD software, mainly used for accurately designing real objects. It saves sketches, size constraints, extrusions, cuts, fillets and other operations in the modeling history. When early parameters are subsequently modified, the related features can be recalculated accordingly.

The software covers Windows, macOS and Linux, and is suitable for users in mechanical design, 3D printing, architectural BIM, engineering drawing and those who need to extend the modeling process with Python. It is not like 3D software that focuses on animation and rendering, but emphasizes size, constraints, solid structure and traceable design process.

Core functions

• Parametric modeling: Control the model through dimensions, constraints, and feature history, and subsequent structures can be regenerated after modifying sketches or parameters.
• Sketching and Part Design: Use Sketcher to draw constrained 2D contours, and then use tools such as Pad, Pocket, Revolution, Fillet, and Chamfer to construct solid bodies.
• Engineering drawings and assembly: Convert the 3D model into a 2D engineering drawing with dimensions, and organize multiple parts and their connection relationships through the assembly workbench.
• Architecture and BIM: Can establish parametric objects such as walls, doors, windows, floors, etc., and process building information model workflows such as IFC.
• Analysis & Manufacturing: Provides FEM finite element analysis, mesh processing and CAM tools to prepare tool paths for CNC machining.
• Open for extensions: Built-in Python console and macro mechanism, external workbench can also be installed through the add-on manager.

Product Features

FreeCAD’s workbench mechanism organizes tools in different fields separately. When making mechanical parts, you can use Part Design and Sketcher centrally, and then switch to BIM when processing architectural models. There are also corresponding entrances when engineering drawings, analysis, or processing are needed. FCStd documents preserve object trees and feature relationships, making it easier to resize later than just saving the final mesh.

The price is a steeper learning curve. New users need to first understand the relationship between documents, bodies, sketch constraints, workbench and feature trees; large assemblies and complex models will also put higher demands on memory, graphics card drivers and recalculation time. The official installation package is larger in size, so you should reserve enough disk space before downloading.

Installation and usage tutorial

1. Windows users download the x64 installer from the official release page and follow the wizard to install it; macOS selects the corresponding DMG based on Intel or Apple chips; Linux users can download x86_64 or ARM64 AppImage, or use the distribution’s software repository.
2. After first startup, confirm the interface language, unit system and navigation method in “Edit – Preferences”, and then switch to “Part Design” from the workbench selector.
3. Create a new document and create a Body, click “Create Sketch”, select the datum plane and draw a closed outline, adding size constraints to the key side lengths.
4. Close the sketch and use “Pad” to extrude the two-dimensional outline into a solid body; if you need to open a hole, you can select a face to create a new sketch, and then use “Pocket” to cut out the material.
5. Double-click an earlier sketch or feature in the tree view to modify parameters. Once completed, save as FCStd file and export as STEP, STL or 2D drawing depending on the purpose.

Applicable scenarios

• Mechanical parts and product prototypes: Suitable for repeated adjustments of brackets, housings, connectors and assembly structures with dimensional constraints.
• 3D Printing: Build precise solids and export to STL while retaining parametric source files that can be modified further.
• Architecture and Engineering Teaching: BIM, drawings and finite element tools cover fundamental exercises from modeling to analysis.
• Automated modeling: Users familiar with Python can write macros, batch generate geometry, or extend the workbench.

Free scope and license

FreeCAD is open source under the LGPL-2.1 license. The official desktop software can be used for personal study, education and commercial projects for free without requiring a subscription. The software itself does not provide paid cloud storage; if third-party collaboration, rendering or manufacturing services are used, the corresponding fees are determined by the service provider.

Usage evaluation

The advantage of FreeCAD is that it has a wide range of functions, the data and modeling history are in the hands of users, and it does not lock common design capabilities behind subscription plans. It is suitable for people who are willing to learn parametric ideas, need cross-platform CAD, or want to customize their processes in Python.

The shortcomings are also very clear: the interaction between different workstations is not always unified, complex tasks require consulting documents, and some professional processes are still far behind mature commercial CAD. It’s easy to get frustrated by using it as a thresholdless drawing tool. It’s easier to get started by starting with a simple part from a constrained sketch, bosses, and grooves than by working on the entire workbench at once.

Update instructions

The current stable version is 1.1.3, released on July 25, 2026. This maintenance version complements the fixes of 1.1.2 and includes security hardening against malicious FCStd files that may trigger code execution and other file processing issues. It also fixes an issue where version update warnings appear repeatedly when saving files. Officials recommend that all users upgrade, especially those who open FreeCAD files from unknown sources.