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Seamly2D
What it is
Seamly2D is free, open-source fashion design software for creating garment patterns on Windows, Linux, and MacOS. Its design workflow can draw on size charts, made-to-measure data, and converted body scans, and supports adapting earlier designs. Listed applications include apparel, costumes, athletic wear, pet gear, outdoor products, and upholstery. Seamly describes a workflow that spans design through manufacturing for physical and digital products, and says the software integrates 2D, 3D, and Mixed Reality. A beta process described for 3DLOOK MOBILE TAILOR measurements converts measurement CSV files into Seamly measurement files by email. The download process asks for a name, email, operating system, and intended use before sending a download link. The download page says Seamly Systems does not sell or share personal information it holds. The site links to a user forum for discussion of the software. Seamly2D is listed with 2D pattern making, size grading, and SVG export. The software is free and open source, with no free trial listed as a separate offer.
For and against
For
- Free and open source
- Runs on Windows, Linux, and MacOS
- Includes 2D pattern making and size grading
- Exports SVG
- User forum available
Against
- Download link requires personal and usage details
- 3DLOOK measurement conversion is described as beta
The verdict
Seamly2D offers a free desktop pattern-design workflow spanning several apparel and product uses. Before downloading, note that the process asks for identifying and intended-use details.
Who it suits
Seamly2D suits fashion and product designers who need desktop tools for garment patterns and size grading. It may also fit users working with made-to-measure data or converted body scans.
Plans and prices
Seamly2D
Free and open source
Read 3 Oct 2026 · seamly.io
On the record
- 3D and mixed reality
- The software page says Seamly integrates 2D, 3D, and Mixed Reality.seamly.io · read 3 Oct 2026
- Body scan integration
- A Seamly article describes a beta process for converting 3DLOOK MOBILE TAILOR measurement CSV files into Seamly measurement files by email.seamly.io · read 3 Oct 2026
- Design workflow
- The software page describes a workflow spanning design through manufacturing for physical and digital products.seamly.io · read 3 Oct 2026
- Download process
- The download page asks users for their name, email, operating system, and intended use, then says it will email a download link.seamly.io · read 3 Oct 2026
- Industries
- The site lists apparel, costumes, athletic wear, pet gear, outdoor products, and upholstery as possible uses.seamly.io · read 3 Oct 2026
- Maker and origin
- The About page names Susan Spencer as the founder and says Seamly 2D grew from her effort to address poor garment fit.seamly.io · read 3 Oct 2026
- Pattern design
- The site says Seamly helps users create patterns quickly and easily and adapt previous designs to current needs.seamly.io · read 3 Oct 2026
- Privacy statement
- The download page says Seamly Systems does not sell or share personal information it holds.seamly.io · read 3 Oct 2026
- Purpose
- Seamly2D is open-source fashion design software for creating garment patterns.seamly.io · read 3 Oct 2026
- Sizing
- The site says designers can use size charts, made-to-measure data, and converted body scans.seamly.io · read 3 Oct 2026
- Support
- The site links to a Seamly user forum described as a discussion forum for Seamly software.forum.seamly.io · read 3 Oct 2026
- Supported desktop systems
- The home page offers downloads for Windows, Linux, and MacOS.seamly.io · read 3 Oct 2026
