SuperSlicer

Free plan LinuxMacWindows

What SuperSlicer is

SuperSlicer is free, open-source slicing software for 3D printing, aimed at detailed control over print settings. It runs on Linux, macOS, and Windows under the GNU Affero General Public License version 3. The project is a fork of PrusaSlicer, which is based on Slic3r. Its tools include a 3D preview, varied infill patterns, spiral vase mode, multiple layer heights in one print, and support, raft, brim, and skirt options. You can prepare multiple objects with different settings, use multiple extruders, and choose G-code flavors such as RepRap, Makerbot, Mach3, and Machinekit. Built-in and custom-generated calibration prints help with tuning. Other controls cover top surfaces, thin walls, holes, overhangs, seams, cooling, and dynamic print speed. SuperSlicer also offers STL auto-repair, multithreaded processing, command-line operation, G-code macros, and post-processing scripts. Only the current stable and development releases are supported; nightly builds are not.

Who it suits

It suits 3D-printing users who need extensive slicer controls, calibration tools, and automation. It is also suitable for users on Linux, macOS, or Windows who prefer open-source software.

What it does well

Free plan with open-source AGPL-3.0 license
Runs on Linux, macOS, and Windows
Built-in and custom calibration tests
Supports multiple extruders and G-code flavors
Includes STL auto-repair and multithreaded processing

What to know first

Nightly builds are unsupported
macOS app is not signed by Apple
Bug support is directed through Discord
Only current stable and development releases supported

Limits

The project supports only the current stable release and current development release shown on its Releases page; nightly builds are unsupported. The software is free, with no paid plan or trial term listed.

Plans

Plan	Billed and limits	Price
SuperSlicer	Open-source slicer · AGPL-3.0	Free

As superslicer.org lists them, read 11 Oct 2026. The maker's own page has the final word.

Getting started

Open the SuperSlicer website
Choose installation instructions for Linux, macOS, or Windows
Install the application for your platform
Import or open a 3D model
Configure printer, extruder, G-code, and print settings
Run calibration prints and preview the sliced result

Verdict

SuperSlicer provides a broad set of print preparation, calibration, and automation controls without a license fee. Its release-support limits and macOS signing note are important considerations before installation.

Questions

Is SuperSlicer free?

Yes. The listed SuperSlicer plan costs nothing, and the project is open source under AGPL-3.0.

Which platforms does it support?

Installation instructions cover Linux, macOS, and Windows.

Which printers and outputs are supported?

It supports multiple extruders and G-code flavors including RepRap, Makerbot, Mach3, and Machinekit.

Does it repair models?

Yes. SuperSlicer includes STL auto-repair.

Does it have multi-material tools?

Yes. Multi-material tools are listed as supported.

Where should bugs be reported?

The project directs bug reports first to its Discord problem_help channel.

Facts from SuperSlicer's own pages

Automation: It has a command-line interface, customizable G-code macros, post-processing scripts, and controls for cooling and dynamic print speed. · docs.superslicer.org, 11 Oct 2026
Calibration: It includes custom-generated calibration tests and built-in calibration prints. · docs.superslicer.org, 11 Oct 2026
Development: Almost all of SuperSlicer is written in C++, and its slicing core can be built and used independently. · docs.superslicer.org, 11 Oct 2026
Help and response: The project directs bug reports to its Discord problem_help channel first and notes that volunteer responses may take a few days. · docs.superslicer.org, 11 Oct 2026
License: SuperSlicer is licensed under the GNU Affero General Public License, version 3. · docs.superslicer.org, 11 Oct 2026
Lineage: SuperSlicer is a fork of PrusaSlicer, which is based on Slic3r. · docs.superslicer.org, 11 Oct 2026
Model handling: It supports multiple objects with distinct print settings, multithreaded processing, and STL auto-repair. · docs.superslicer.org, 11 Oct 2026
Printer output: It supports multiple extruders and G-code flavors including RepRap, Makerbot, Mach3, and Machinekit. · docs.superslicer.org, 11 Oct 2026
Print tuning: It offers settings for top surface quality, denser infill under solid top layers, thin walls, holes, overhangs, brims, and seams. · docs.superslicer.org, 11 Oct 2026
Purpose: SuperSlicer is open-source slicing software for 3D printing, designed for advanced control over print settings. · docs.superslicer.org, 11 Oct 2026
Slicing features: It provides 3D preview, multiple layer heights in one print, spiral vase mode, varied infill patterns, and support material, raft, brim, and skirt options. · docs.superslicer.org, 11 Oct 2026
Supported systems: Installation instructions cover Windows, macOS, and Linux; macOS instructions note the app is not signed by Apple. · docs.superslicer.org, 11 Oct 2026
Support limits: The project supports only the current stable release and current development release listed on its Releases page; nightly builds are unsupported. · docs.superslicer.org, 11 Oct 2026

Where SuperSlicer stands on Freedom251

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