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IceSL

icesl.inria.fr

Free plan WebWindowsLinuxAPI
Visit icesl.inria.fr
Spec score 8.1 #6 of 27 in 3D Slicer Software

What it is

IceSL is a free set of 3D modeling and slicing tools for customizable shape fabrication. IceSL-forge combines modeling and slicing through a Lua language that describes Boolean combinations of triangle meshes, voxels, implicit surfaces and shaders. IceSL-slicer turns models or geometry scripts into G-code, DLP printer images and laser-cutter paths. SliceCrafter provides browser-based slicing, while WebPrinter previews G-code by emulating a 3D printer. Available slicing methods include cubic and tetrahedral infills, bridge supports, adaptive layer thickness, progressive infills, efficient offsetting, protective shields and self-supporting cavities. Polyfoam and Phasor infillers expose local density, orientation, direction and randomness controls. Layer thickness, infill density and printing speed can vary by layer. Documentation covers plugins, printer profiles and pyicesl Python bindings. IceSL requires a GPU with full OpenGL 4.3 support. Its free license is limited to internal research and academic use; commercial and production use are forbidden.

Spec sheet

Purpose
IceSL provides tools for 3D modeling and slicing, including customizable shape fabrication.Read 8 Oct 2026 · icesl.inria.fr
Platforms
The download page lists IceSL for Windows and Linux, and pyicesl bindings for Windows and Linux; it also describes SliceCrafter as browser-based.Read 8 Oct 2026 · icesl.inria.fr
Integrations
IceSL documentation describes a plugin system, printer profile documentation, and Python bindings called pyicesl; the download page offers pyicesl packages for Windows and Linux.Read 8 Oct 2026 · icesl.inria.fr
Support
The EULA says the licensor does not offer installation or implementation assistance or software maintenance.Read 8 Oct 2026 · icesl.inria.fr
Headquarters
Le Chesnay, FranceRead 28 Sep 2026 · icesl.inria.fr
Founded
1967Read 28 Sep 2026 · icesl.inria.fr
Advanced slicing
The site lists cubic and tetrahedral infills, bridge support structures, adaptive layer thickness optimization, progressive infills, efficient offsetting, protective shields, and self-supporting cavities.Read 8 Oct 2026 · icesl.inria.fr
Beta status
The download page says beta releases expose new features that may change or be unstable.Read 8 Oct 2026 · icesl.inria.fr
Documentation
The documentation site provides specifications, tutorials, guides, and videos, and invites community questions and contributions through its forum.Read 8 Oct 2026 · icesl.inria.fr
Flexible infills
Polyfoam and Phasor infillers let users control local density, infill orientation, direction, and randomness to create desired deformation properties.Read 8 Oct 2026 · icesl.inria.fr
Hardware requirement
IceSL requires a GPU with full OpenGL 4.3 support; the site lists Windows 7/10 64-bit, Debian stable/testing 64-bit, and Ubuntu LTS 64-bit among tested operating systems.Read 8 Oct 2026 · icesl.inria.fr
Layer controls
Users can specify printing settings such as layer thickness, infill density, and printing speed per layer, with smooth variations by height.Read 8 Oct 2026 · icesl.inria.fr
License limits
The EULA grants a free, non-exclusive, non-transferable license for internal research and academic use, and forbids commercial use and production use.Read 8 Oct 2026 · icesl.inria.fr
Modeling
IceSL-forge combines modeling and slicing using a Lua-based language for Boolean combinations of triangle meshes, voxels, implicit surfaces, and shaders.Read 8 Oct 2026 · icesl.inria.fr
Online tools
SliceCrafter runs the slicing technology in a web browser, and WebPrinter previews G-code by emulating a 3D printer executing it.Read 8 Oct 2026 · icesl.inria.fr
Slicing outputs
IceSL-slicer can generate G-code, images for DLP printers, and cutting paths for laser cutters from 3D models or geometry scripts.Read 8 Oct 2026 · icesl.inria.fr

Plans and prices

IceSL Free Free license · internal research and academic use only · commercial and production use forbidden Read 8 Oct 2026 · icesl.inria.fr

Every IceSL plan and price →

Strong points and limits

Strong points

  • Free license for internal research and academic use
  • Combines Lua modeling with slicing workflows
  • Generates G-code, DLP images and laser paths
  • Offers programmable infill and layer controls
  • Includes browser slicing and G-code preview tools

Limits

  • Commercial and production use are forbidden
  • Requires a GPU with full OpenGL 4.3 support
  • Licensor offers no installation or maintenance assistance
  • Beta releases may change or be unstable

Who it suits

IceSL suits academic and research users working with programmable 3D modeling, slicing or fabrication. It is available through API, Linux, web and Windows environments, subject to the GPU requirement.

Verdict

IceSL provides extensive programmable modeling and slicing controls at no cost for its permitted audience. The research-only license, hardware requirement and limited support make its usage boundaries important before adoption.

Where Specifiction places it

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