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Mainsail vs Repetier-Server: catalog facts
Mainsail	Repetier-Server
Screenshots	Screenshots
Best for: Control a Klipper printer through a browser dashboard	Best for: Running several 3D printers from one local server without a subscription
Free Free and open source. Hosting, hardware and any external services are separate.	Free + paid options Free version available; Pro is a one-time purchase for five installations with no subscription.
Self-hosted, Web	Web, Self-hosted
Shows printer status and job controls Provides configuration and print-file management	Runs several printers from one installation Multiple webcams per printer with timelapse All 4 strengths for Repetier-Server Runs several printers from one installation Multiple webcams per printer with timelapse G-code manager with 3D and 2D previews Touchscreen interface for printer-side displays
Requires Klipper and a compatible Moonraker installation.	Some features require the paid Pro version Closed source
Self-hosted, Web application	Downloadable app, Self-hosted
Open source	Not open source
License: GPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Offline features available
Official website Full listing and sources Sources for Mainsail docs.mainsail.xyz github.com/mainsail-crew/mainsail Catalog checked September 22, 2026	Official website Full listing and sources Sources for Repetier-Server repetier-server.com Catalog checked September 24, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.

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