Mainsail

Spec sheet

Purpose

Mainsail is a web interface for managing and controlling 3D printers powered by Klipper firmware.Read 9 Oct 2026 · docs.mainsail.xyz

Product

Mainsail is a web interface for managing and controlling 3D printers powered by Klipper firmware.Read 8 Oct 2026 · docs.mainsail.xyz

Integrations

Mainsail supports slicer workflows and documents Cura, IdeaMaker, OrcaSlicer, and PrusaSlicer integrations.Read 9 Oct 2026 · docs.mainsail.xyz

Privacy

The documentation says Mainsail runs locally in the browser, communicates directly with the printer through Moonraker, and does not use telemetry or transfer data externally.Read 9 Oct 2026 · docs.mainsail.xyz

Support

The project lists Discord as its primary community support channel, GitHub Discussions as an alternative, and Reddit as community-driven help that is not officially supported.Read 9 Oct 2026 · docs.mainsail.xyz

Architecture

Mainsail is a front-end that works with Moonraker, which provides the API, and Klipper, which controls the printer.Read 8 Oct 2026 · docs.mainsail.xyz

Cameras and power

Mainsail supports webcam monitoring, timelapses, and control of relays and supported smart power devices.Read 8 Oct 2026 · docs.mainsail.xyz

Customization

Users can rearrange dashboard cards and navigation, and customize themes with logos, backgrounds, and custom CSS.Read 9 Oct 2026 · docs.mainsail.xyz

Deployment options

Installation options include MainsailOS, KIAUH, manual installation, and a hosted demo intended for testing and exploration.Read 9 Oct 2026 · docs.mainsail.xyz

Files and macros

Users can manage G-code and configuration files in the browser and organize and run macros with prompts and parameters.Read 9 Oct 2026 · docs.mainsail.xyz

Hosted demo limit

The hosted demo is intended for testing and exploration and requires Klipper and Moonraker to already be installed to connect to a printer.Read 8 Oct 2026 · docs.mainsail.xyz

Installation

The recommended setup is MainsailOS, a prebuilt image that includes Mainsail, Moonraker, Klipper, and dependencies; KIAUH and manual installation are also documented.Read 8 Oct 2026 · docs.mainsail.xyz

Installation requirements

Mainsail is the frontend and requires Klipper firmware and Moonraker, which acts as its API server, to work.Read 9 Oct 2026 · docs.mainsail.xyz

Live controls

The Moonraker-based interface provides real-time printer control and monitoring of temperatures, progress, and printer state.Read 9 Oct 2026 · docs.mainsail.xyz

MainsailOS

MainsailOS is a prebuilt image for supported single-board computers that includes Mainsail, Moonraker, Klipper, Crowsnest, Sonar, and a timelapse plugin.Read 9 Oct 2026 · docs.mainsail.xyz

Maintainers

Mainsail describes itself as an open-source project maintained by meteyou and a community.Read 8 Oct 2026 · docs.mainsail.xyz

Multiple printers

One Mainsail interface can control and monitor multiple printers.Read 9 Oct 2026 · docs.mainsail.xyz

Print tools

Features include print history and statistics, bed mesh and G-code visualization, temperature presets, and object exclusion during a print.Read 9 Oct 2026 · docs.mainsail.xyz

Printer management

The interface can manage multiple printers and show live temperatures, print progress, and printer state.Read 8 Oct 2026 · docs.mainsail.xyz

Slicer integrations

The documented supported slicers are Cura, IdeaMaker, OrcaSlicer, and PrusaSlicer; configuration enables direct G-Code uploads and other features.Read 8 Oct 2026 · docs.mainsail.xyz

Support limits

The Mainsail-Crew says its members work voluntarily in their free time and responses may take longer depending on the user’s time zone.Read 9 Oct 2026 · docs.mainsail.xyz

Visualization

Mainsail includes Bed Mesh and G-Code Viewer tools for print diagnostics.Read 8 Oct 2026 · docs.mainsail.xyz

Plans and prices

Every Mainsail plan and price →

Where Specifiction places it

• 3D Printing Software#5 of 358.4