Marlin

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Freedom report

Two barsScore 6.3

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely0 of 6 device platforms
DocumentedPlans, terms and facts published

Marlin is ranked #15 of 34 in 3D printing software on Freedom251. It runs on Self-hosted. There is a free plan.

Marlin plans and pricing

All plans

Marlin Firmware Free GPLv3 licensed · free for all applications marlinfw.org · 7 Oct 2026

Compared on 3D printing software

Free plan: Yes
Auto supports: No
Printer control: Yes
Print monitoring: Yes
Cloud slicing: No
Multi-material tools: Yes
Model repair: No

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The record

Product: Marlin is open source firmware for the RepRap family of 3D printers.
License: Marlin is licensed under GPLv3 and is free for all applications.
Machine control: Marlin runs as a self-contained application on a printer’s mainboard and coordinates heaters, steppers, sensors, lights, displays, and buttons.
Standalone operation: Marlin can run standalone, and the site says a host such as OctoPrint can be connected for remote monitoring.
Other machines: Marlin can also drive CNC machines and laser engravers.
Hardware: Marlin supports microcontrollers from 8-bit Atmel AVR boards to 32-bit ARM boards.
Motion features: Highlighted features include input shaping, linear advance, fixed-time motion, and automatic bed leveling.
Safety features: The site lists thermal protection, power-loss recovery, and filament-runout handling among Marlin’s safety features.
Build tools: The site recommends PlatformIO with Auto Build Marlin for building and uploading firmware, and says many targets can also be built with Arduino IDE.
Host integrations: The documentation lists OctoPrint, Pronterface, Repetier Host, and Cura as host software options.
Configuration: Marlin is configured for the target machine and board, and installation options vary by board, features, and firmware version.
Security controls: When PASSWORD_FEATURE is enabled, Marlin supports locking the machine with a numeric passcode.
Support: The project lists its Discord community as a place for realtime help from users and developers.
Maker: The site says Marlin is owned and maintained by the maker community.
Price from: Free

Where it ranks on Freedom251

Best 3D Printing Software in 2026#15 of 34

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Sources

marlinfw.org/docs/basics/introduction.html· checked 7 Oct 2026
marlinfw.org/meta/features/· checked 7 Oct 2026
marlinfw.org· checked 7 Oct 2026
marlinfw.org/docs/basics/install.html· checked 7 Oct 2026
marlinfw.org/docs/gcode/M510.html· checked 7 Oct 2026
marlinfw.org/docs/development/contributing.html· checked 7 Oct 2026