Software · Photo & graphics

Seamly2D

Sewing pattern design software.

Completely free
Linux
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub
License: GPL-3.0+ — Open source (copyleft)confirmed by Flathub
Open source: Yes
Commercial use: Yesconfirmed by Official plan pages (pricing, licence, terms), Flathub
Account required: not documented
Credit card required: Noconfirmed by Flathub
Watermark: not documented
Ads: not documented
Platforms: LinuxEstablished by Linux: Flathub
Publisher: Seamly2D project
Latest version: v2026.11.2.131 (2 November 2026)
Latest activity: 7 November 2026
Source code: github.com/FashionFreedom/Seamly2D

At a glance

Seamly2D is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
Commercial use allowed

About

Seamly2D is pattern design software to create reusable, scalable, sharable custom-fit patterns using bespoke tailoring, haute couture, and historical pattern drafting techniques. Seamly2D saves time and improves fit by creating patterns that are reusable parametric CAD engineering documents. Unlike other pattern design software, Seamly2D allows designers to have complete control of the patternmaking process. Each reusable, scalable pattern can read multi-size tables for boutique sizing, and read individual measurement files for custom-fit. Seamly2D is open source software released under the GPLv3+ license. Seamly2D is available for Windows, MacOS, and Linux. Learn more about Seamly2D by joining our active, friendly community at https://forum.seamly.io

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Official plan pages (pricing, licence, terms) (commercial use) — 8 November 2026
Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 8 November 2026
Last technical check: 7 November 2026
Description from Flathub — AppStream (Flathub)

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