Mainsail — 3D printing (Open Source)

Mainsail is an open-source 3D printing solution. Compare it against 2 other 3D printing tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is Mainsail?

Mainsail is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under 3D printing. Buyers typically evaluate Mainsail when they need a dependable 3D printing option and want to weigh the trade-offs between free, open-source and paid tools before committing.

Mainsail alternatives

If Mainsail isn't the right fit, compare these 3D printing alternatives side by side:

FluiddOctoPrint

Frequently asked questions

Is Mainsail free?
Yes. Mainsail is open source and free to use, with no purchase cost for the core product.
What are the best Mainsail alternatives?
Popular 3D printing alternatives to Mainsail include Fluidd, OctoPrint. See the full list of 3D printing on FreeSoftwareX.
What type of software is Mainsail?
Mainsail is an open-source 3D printing tool.

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