Marlin

Marlin Firmware is an open source firmware for 3D printers, Plotters, Foam-cutters, Laser-cutters, and CNC routers.

The complete project includes these components:

Marlin : The firmware source code. Authorized for use under the GPLv3 License.
Configurations : Example configurations for a wide variety of machines.
MarlinDocumentation: Jekyll source code for the marlinfw.org website.
AutoBuildMarlin: A Visual Studio Code extension used to configure, build and install Marlin Firmware.

We also maintain a few supporting libraries required for a proper build of Marlin Firmware.

Pinned Loading

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 wit…

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Marlin Firmware Documentation Project

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Configurations for Marlin Firmware

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Visual Studio Code extension to more easily build Marlin Firmware

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Showing 10 of 12 repositories

Marlin Public
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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MarlinBuilds Public
Built binaries of Marlin based on published Marlin Configurations.

MarlinFirmware/MarlinBuilds’s past year of commit activity

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GPL-3.0
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Updated Jan 23, 2026
AutoBuildMarlin Public
Visual Studio Code extension to more easily build Marlin Firmware

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MarlinFirmware/TMCStepper’s past year of commit activity

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U8glib-HAL Public
Customized U8glib for use in Marlin 2.0

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MarlinFirmware/TMC26XStepper’s past year of commit activity

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.github Public
Metadata for the MarlinFirmware organization

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