Mainsail

Mainsail provides a lightweight, responsive web interface for printers3D printers running the Klipper firmware. It runs on a self‑hosted server and can be accessed from any device, offering a consistent design that works on desktops, tablets and mobile browsers. The interface connects to Moonraker to deliver real‑time control and monitoring of printer status, temperatures and job progress.

The system supports managing multiple printers from a single dashboard, with features such as file management, in‑browser editing of G‑Code and configuration files, and a configurable layout that lets users arrange cards and navigation to match their workflow. Additional tools include a 3‑D G‑Code viewer, bed‑mesh visualisation, multi‑webcam support, timelapse integration, power‑device control and macro management with prompts and parameters.

Mainsail also tracks print history and usage statistics, offers temperature presets, object exclusion, and multilingual localisation in twelve languages. It is released under GPL‑3.0, is free of subscription, and is maintained as an open‑source project with comprehensive documentation and community support.