MAKER TOOLS · DOWNLOADS

Open-Source 3D Tools

A curated registry of genuinely free and open-source software for repair, slicing, conversion and analysis — with official links only and honest verification status.

Free & open-source · Official links only · License aware

MeshLab
Release not yet verified
Open-source system for the processing and editing of unstructured 3D triangular meshes. Repair, inspect, and convert meshes for 3D printing.
License
GPL-3.0
Platforms
Windows, macOS, Linux
Category
Mesh editing
Official site Source code
Officially hosted by CNR ISTI VCLab.
PrusaSlicer
Release not yet verified
Feature-rich G-code generator for 3D printers, built on top of the Slic3r engine. Slicing, support generation and print preview in one app.
License
GPL-3.0
Platforms
Windows, macOS, Linux
Category
Slicer
Official site Source code
Prusa Research official software; releases distributed via GitHub and the Prusa site.
Ultimaker Cura
Release not yet verified
Ultimaker’s official open-source slicer: profiles for a huge range of printers, tree supports, adaptive layer height, and a plugin marketplace.
License
LGPL-3.0
Platforms
Windows, macOS, Linux
Category
Slicer
Official site Source code
OpenSCAD
Release not yet verified
The programmers solid 3D CAD modeller. Script-based modeling from the command line or a desktop GUI.
License
GPL-2.0
Platforms
Windows, macOS, Linux
Category
Programmatic CAD
Official site Source code
ADMesh
Release not yet verified
A program for processing triangulated solid meshes. Check and repair STL files before printing.
License
GPL-2.0
Platforms
Linux, CLI
Category
Format conversion
Official site Source code
Open Asset Import Library (Assimp)
Release not yet verified
Portable C/C++ library to import and export 3D models in dozens of formats (OBJ, STL, PLY, glTF, FBX and more). Powers many tools in this list.
License
BSD-3-Clause
Platforms
Windows, macOS, Linux, CLI
Category
Format conversion
Official site Source code