3D technology is used in a wide range of fields, including film, video games, architecture, engineering, and product design. It allows designers to create digital models of objects that can be manipulated and rendered in three dimensions. 3D modeling software is used to create and manipulate 3D models, and 3D animation software is used to create movement and effects within those models. 3D technology has also been adopted for use in 3D printing, where physical objects can be created from digital models.

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FreeCAD / FreeCAD

Sponsor

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

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Updated May 1, 2026
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MarlinFirmware / Marlin

Sponsor

Marlin is a firmware for RepRap 3D printers optimized for both 8 and 32 bit microcontrollers. Marlin supports all common platforms. Many commercial 3D printers come with Marlin installed. Check with your vendor if you need source code for your specific machine.

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Updated May 1, 2026
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OrcaSlicer / OrcaSlicer

Sponsor

G-code generator for 3D printers (Bambu, Prusa, Voron, VzBot, RatRig, Creality, etc.)

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Updated May 1, 2026
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openscad / openscad

Sponsor

OpenSCAD - The Programmers Solid 3D CAD Modeller

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Updated Apr 26, 2026
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Ultimaker / Cura

Sponsor

3D printer / slicing GUI built on top of the Uranium framework

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Updated Apr 30, 2026
Python

cnr-isti-vclab / meshlab

The open source mesh processing system

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Updated Feb 3, 2026
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dw-0 / kiauh

Klipper Installation And Update Helper

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Updated Apr 24, 2026
Python

slic3r / Slic3r

Open Source toolpath generator for 3D printers

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Updated Jun 18, 2024
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Keychron / Keychron-Keyboards-Hardware-Design

Industrial design files for Keychron keyboards and mice. 100+ models with CAD assets in STEP, DXF, DWG, and PDF. Source-available, with commercial use allowed for original compatible accessories within the license terms.