Conheça uma alternativa ao Mainsail

Como o SimplyPrint se compara ao Mainsail? Qual é a melhor plataforma na nuvem para impressão 3D? Descubra por que o SimplyPrint pode ser exatamente o que você e sua impressora não sabiam que estavam precisando!

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Procurando alternativas ao Mainsail?

Mainsail is one of the two web interfaces most Klipper owners reach for (Fluidd is the other), and it's genuinely excellent: a fast, clean, fully local dashboard for a Klipper printer, built on the Moonraker API. If OctoPrint is the classic interface for Marlin machines, Mainsail is its Klipper counterpart, and a really well-made one.

SimplyPrint isn't a rival to that, and we don't pretend to be. We connect to Klipper printers through Moonraker's built-in [simplyprint] component, with no plugin to install, and we run happily alongside Mainsail (Moonraker allows several clients at once), so your Mainsail UI keeps working exactly as it does now. We've also collaborated with the Mainsail team and chipped in to support the project a few times. The honest difference is simple: Mainsail is built to run one Klipper printer beautifully. When one printer becomes a fleet, a classroom or a farm, that's the job SimplyPrint was built for.

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Mainsail is free, open-source and fully local, and it's one of the best hands-on web interfaces for a single Klipper printer. If you run one (or a few) Klipper machines, love full local control, and don't need to reach them from outside your network, Mainsail is a brilliant choice, and you can keep it.

SimplyPrint is the layer above that, for when one printer becomes many. Instead of switching between printers one at a time, you get your whole fleet in one dashboard, reachable from any device, with an auto-assigning print queue and continuous printing (AutoPrint), AI failure detection and bed-check, built-in filament inventory and maintenance, central users, roles and SSO, and a schools plan. It runs Klipper (via Moonraker), Bambu Lab, Prusa, Marlin and Duet machines side by side, and it connects through Moonraker's built-in component, so it sits happily next to Mainsail. Mainsail for one Klipper printer; SimplyPrint for a fleet, a classroom or a farm.

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  1. Resumindo
  2. One Klipper printer, beautifully. A fleet needs more.
  3. Reach it from anywhere, and run more than Klipper
  4. Where Mainsail is the better pick (and how we work together)
  5. Full comparison table
  6. FAQ

One Klipper printer, beautifully. A fleet needs more.

Mainsail connects to one Klipper printer at a time. You can register several and switch between them (and Mainsail even has a "farm overview"), but that's a status hub and a switcher, not a single screen that runs the whole fleet. SimplyPrint was built for the opposite.

Managing the fleet
SimplyPrint
Every printer (Klipper, Bambu, Prusa, Marlin, Duet) lives in one dashboard, monitored and controlled together, grouped however you like.
Mainsail
One printer at a time. The "print farm overview" lists your registered Moonraker instances and lets you switch between them, but you operate a single printer per session - there's no unified screen controlling them all at once.
Keeping it printing
SimplyPrint
A queue auto-assigns and auto-starts each job on the next free, suitable printer, and AutoPrint keeps the fleet running lights-out.
Mainsail
The only queue is Moonraker's per-printer FIFO job queue, scoped to that one machine. There's no cross-printer queue, no auto job-assignment and no fleet automation - coordinating printers means external scripts against each one's API.
People & classrooms
SimplyPrint
One account works across the whole fleet, with central roles and granular permissions, SSO, and a dedicated schools plan (classes, teachers, students, approval queues).
Mainsail
No account system of its own - it leans on Moonraker's optional login. You can have a couple of logins, but every user gets the same full access; there are no roles, permission groups, SSO or education features.
For one Klipper printer, Mainsail's single-printer model is exactly right. For many, you're switching between separate dashboards with nothing tying them together - and stitching a fleet together is the whole reason SimplyPrint exists.

Reach it from anywhere, and run more than Klipper

Mainsail is a local interface for a Klipper printer. Reaching it from outside your network, and running printers that aren't Klipper, is where the two part ways.

Remote access
SimplyPrint
Cloud-native: reach every printer from any browser, plus native iOS and Android apps, with nothing to expose and no port-forwarding.
Mainsail
No built-in remote access - Mainsail talks to Moonraker on your LAN, and its own docs say not to open Mainsail/Moonraker ports to the internet. Remote means adding a VPN, a relay (OctoEverywhere, Obico) or a secured reverse proxy yourself.
Which printers
SimplyPrint
Klipper (via Moonraker), Bambu Lab, Prusa, Marlin and Duet, plus OctoPrint-connected machines, all in one fleet.
Mainsail
Klipper only. Mainsail needs Klipper firmware + Moonraker; it doesn't drive generic Marlin-over-serial printers or Bambu Lab machines.
It runs alongside Mainsail
SimplyPrint
SimplyPrint connects through Moonraker's built-in [simplyprint] component - nothing to install, and because Moonraker allows several clients, your Mainsail keeps working untouched.
Mainsail
Mainsail keeps doing exactly what it's great at on the local network; SimplyPrint just adds the cloud, the fleet view and the automation on top.
Mainsail gives you total local control of a Klipper printer that's in the room with you. SimplyPrint gives you secure access to your whole mixed fleet from anywhere - and it runs next to Mainsail, not instead of it.

Where Mainsail is the better pick (and how we work together)

We mean this: for a lot of Klipper owners, Mainsail is the right answer, and SimplyPrint can't match it on these. Credit where it's due.

A single Klipper printer
SimplyPrint
Built for one or many printers, but it's a managed cloud platform, not a local UI you own and tweak line by line.
Mainsail
For one Klipper machine, one of the nicest hands-on UIs there is: deep config editing, G-code preview, bed-mesh visualisation, macros, themes - fast and fully under your control.
Free, local & open-source
SimplyPrint
A cloud platform (EU/US data centres, GDPR-compliant). On-prem is an enterprise, contact-based option.
Mainsail
Free and open-source (GPLv3), running entirely on your own hardware with no cloud - the right call for offline, privacy-first or strict-IT setups, and for people who want to own the whole stack.
We're on the same side
SimplyPrint
We connect through Moonraker's built-in component and run alongside Mainsail - and we've collaborated with the Mainsail team and supported the project with donations a few times.
Mainsail
Mainsail keeps being the best local Klipper UI it can be; we'd genuinely encourage you to support the project too.
If you run a single Klipper printer, want to stay fully local, or love a hands-on UI, Mainsail is genuinely the better tool - keep it. When one printer becomes a fleet, a classroom or a farm, that's where SimplyPrint takes over, sitting right alongside Mainsail via Moonraker.

Comparação entre Mainsail e SimplyPrint

Nothing is black-and-white, and there are always pros and cons to consider when choosing a 3D printing cloud solution!
And we're not here to simply tell you, that SimplyPrint is the best - we want you to make an informed decision, and of course there are pros of using Mainsail as well!

Vantagens de usar Mainsail

Mainsail has real, lasting strengths, and they're worth being honest about:

  • Free & open-source: GPLv3, self-hosted on your own hardware - you own the whole stack, no subscription and no cloud required.
  • One of the best Klipper UIs: a fast, polished, fully local interface with config editing, G-code preview, bed-mesh visualisation, macros and theming.
  • MainsailOS: a prebuilt Raspberry Pi (and other SBC) image that ships Klipper + Moonraker + Mainsail ready to flash.
  • Print history & Spoolman: shows per-printer print history and statistics (via Moonraker) and integrates Spoolman for filament-spool inventory.
  • Installable PWA & big community: runs as an add-to-home-screen web app, with a large, active Klipper community behind it.

Contras de usar Mainsail

Where Mainsail runs into a ceiling once you're past a single printer:

  • One printer at a time: you switch between registered printers (the "farm overview" is a status hub and switcher), with no unified fleet dashboard and no cross-printer queue, auto-assignment or automation.
  • Klipper only: needs Klipper firmware + Moonraker; it doesn't run generic Marlin-over-serial printers or Bambu Lab machines.
  • No built-in remote access: local-only by design, and the docs warn against exposing it to the internet, so remote use means a VPN, relay or reverse proxy.
  • No roles or SSO: it relies on Moonraker's optional login, which has no permission groups, roles, SSO or schools/education features.
  • No plugin system, slicer or AI: you extend it with Klipper macros and themes (no OctoPrint-style plugins), slice in a desktop slicer, and AI failure detection comes from a separate service like Obico.

Mainsail vs. SimplyPrint

Comparação lado a lado de detalhes e recursos entre Mainsail e SimplyPrint

Mainsail logo SimplyPrint logo
Geral
Tem plano gratuito
Free printers Unlimited 2
Custo máximo Free (self-hosted) Free, or from $9.99/mo (Pro)
Armazenamento em nuvem gratuito 1GB
Custo baseado no uso
Impressão ilimitada
É compatível com todas as impressoras Klipper printers only
Recursos
Acesso remoto LAN only (VPN/relay to go remote)
Gestão de filamento Via Spoolman
Filament NFC tags (read & write)
Filament label printing (Dymo / Zebra)
Conhece sua impressora
Arquivos na nuvem
Fila de impressão Per printer (Moonraker)
Transmissão ao vivo LAN webcam
Análise de Gcode
Detecção de falhas com IA
AI Bed Check (is the bed clear?)
AutoPrint / impressão contínua
Maintenance & servicing system
Custom fields
Staggered Start (for power draw)
Histórico de trabalhos de impressão
Imprima remotamente
Slicer integrado
Adequado para várias impressoras Switch + farm overview
Multi-impressão
Multi-transmissão
Estatísticas Per printer
API
Rotação inteligente do slicer
Troca inteligente de filamento
Assistente de nivelamento de mesa
Organização
Vários usuários Via Moonraker login
Grupos de usuário / níveis
Permissões do usuário
Plano para escolas
Arquivos & pastas compartilhados
Perfis de slicer compartilhados
Hub
Domínios personalizados
SSO (login único)
Notificações
Notificações por e-mail Via Moonraker
Notificações push (celular / app) Via apps
Notificações por SMS / mensagem de texto
Apps
Aplicativo Android Mobileraker (3rd-party)
app para iOS Mobileraker (3rd-party)
"PWA" (aplicativo web instalável)
Security & privacy
Autenticação de dois fatores da conta
Análise e coleta de dados focadas em privacidade ?
Suporte
Suporte por chat ao vivo
Suporte por telefone
Suporte por e-mail
Firmware & compatibilidade com gateway
Instalação do OctoPrint
Suporte nativo ao Moonraker
Instalação do Mainsail
Instalação do Fluidd
Compatibilidade com Klipper
Integração com Duet3D
Suporte direto à Prusa (MK4, XL e superiores / placas principais novas)
Integração direta com impressoras Bambu Lab
Compatibilidade com integrações personalizadas
Enterprise e parceiros
OEM
Programa de parceiros (revendedor/distribuidor)
Programa de afiliados
On-prem / self-hosting ? Yes, open-source & local Contact us
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Mainsail vs. SimplyPrint: perguntas frequentes

Is SimplyPrint a replacement for Mainsail?

Not exactly - it's a different job, and the two work together. Mainsail is a local web UI for a single Klipper printer. SimplyPrint connects to your Klipper printer through Moonraker's built-in [simplyprint] component (no plugin to install), and because Moonraker allows multiple clients, your Mainsail keeps working exactly as before. Most people who switch to SimplyPrint do so because they've outgrown a single-printer interface and want their whole fleet, remote access, a queue and automation - not because anything's wrong with Mainsail.

Can I use Mainsail and SimplyPrint at the same time?

Yes. SimplyPrint connects via Moonraker, which supports several clients at once, so you can keep Mainsail on your local network and add SimplyPrint's cloud on top - your Klipper config and Mainsail UI aren't modified. You just add [simplyprint] to your Moonraker config.

Is Mainsail or SimplyPrint better for multiple printers or a print farm?

For a single Klipper printer, Mainsail is excellent. For multiple printers it's a switcher: you register each printer and view them one at a time (its "farm overview" is a status hub), with no unified dashboard, cross-printer queue or automation. SimplyPrint is built for fleets - every printer in one dashboard, an auto-assigning queue, continuous printing with AutoPrint, AI failure detection, and filament and maintenance tracking across the whole farm, on Klipper and other brands together.

Does Mainsail support Bambu Lab or non-Klipper printers?

No. Mainsail is a Klipper interface - it needs Klipper firmware and Moonraker, so it doesn't drive generic Marlin-over-serial printers or Bambu Lab machines. SimplyPrint runs Klipper printers (via Moonraker) alongside Bambu Lab, Prusa, Marlin, Duet and OctoPrint-connected machines in one fleet.

Does Mainsail have remote access?

Not built in. Mainsail talks to Moonraker on your local network, and the project's own docs advise against opening Mainsail/Moonraker to the internet, so remote access means adding a VPN, a relay (such as OctoEverywhere or Obico) or a secured reverse proxy yourself. SimplyPrint is cloud-native: you reach every printer securely from any browser, plus native iOS and Android apps, with nothing to expose.

Mainsail or Fluidd - which does SimplyPrint work with?

Both. Mainsail and Fluidd are the two most popular Klipper web interfaces, and they're both Moonraker frontends. SimplyPrint connects through Moonraker itself, so it works the same whether you run Mainsail, Fluidd, both, or neither - and it runs alongside them.

Is Mainsail free, and does SimplyPrint support the project?

Mainsail is free and open-source (GPLv3), built by the mainsail-crew (led by Stefan Dej, "meteyou") and funded by community donations. SimplyPrint has a free tier too (2 printers, every feature) and paid plans as you scale. We're genuine fans - we've collaborated with the Mainsail team and supported the project with donations a few times, and we'd encourage anyone who relies on Mainsail to support it as well.

What is the best alternative to Mainsail for a print farm or fleet?

If you have outgrown a single Klipper printer, SimplyPrint is the natural step up from Mainsail. It keeps your whole fleet (Klipper via Moonraker, plus Bambu Lab, Prusa, Marlin and Duet) in one dashboard, with an auto-assigning print queue, continuous printing through AutoPrint, AI failure detection, and filament and maintenance tracking across every machine. We have run print farms ourselves since 2020, so the fleet workflow is built for real production, not bolted on. And because it connects through Moonraker's built-in component, you do not have to give up Mainsail to add it.

Can I just add a VPN or relay to Mainsail instead of switching?

You can, and for one printer that is often the right call. A VPN (such as Tailscale) or a relay (OctoEverywhere, Obico) gets you remote access to a single Mainsail instance, which is exactly what Mainsail's own docs recommend. What that does not give you is a unified fleet view, a cross-printer queue, auto job-assignment, central users and roles, or AI failure detection. SimplyPrint adds all of that as a cloud layer on top of the same Moonraker connection, so you can keep Mainsail on the LAN and reach the whole fleet from anywhere.

Conclusion
Why SimplyPrint is the Top Mainsail Alternative

Criamos o SimplyPrint porque nada mais no mercado atendia bem às nossas necessidades. Queríamos uma plataforma fácil de usar, mas que ainda tivesse todos os recursos de que precisávamos. Queríamos uma plataforma rica em recursos, intuitiva e fácil de usar, com uma ótima experiência de usuário e inovação de verdade no espaço de software de gestão de impressão 3D.

Em resumo, nós, humildes e imparciais como somos 😉, acreditamos que a plataforma SimplyPrint é uma ótima alternativa ao Mainsail!

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