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| Decision field | Free downloadSeamly2DGlobalRemove | Open accessKnitting Stitch LibraryGlobalRemove | Open accessTech Pack Definition, Contents & LimitsGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Find patterns & fit | Learn techniques | Source production |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Techniques & repair | Production |
| Best for | Digital pattern drafting | Learning or comparing knit structures | Understanding what a tech pack must control before using a template or releasing work |
| Know before using | Patternmaking knowledge, controlled measurement files, production conventions, and sewn fit testing are still required. The software does not validate body measurements, ease, balance, grading rules, fabric behavior, construction, or product fit. The project currently labels its user wiki manual as needing updates, so confirm current commands and file behavior against the installed release and active support channels. | A foundational library, not yet an exhaustive stitch encyclopedia. | An orientation rather than a completed product record; it does not supply a universal format, licensed standard content, measurements, tolerances, construction settings, labels, approvals, compliance conclusion, or product-release authority. |
| Practical access | |||
| For | Both | Makers | Apparel brands |
| Location or jurisdiction | Global | Global | Global |
| Access | Free download | Open access | Open access |
| Format | Software | Stitch Authority | Stitch Authority |
| Source type | Open-source project | Stitch Authority | Stitch Authority |
| Source and review | |||
| What the source establishes | The maintained Seamly2D repository identifies the application as GPLv3+ open-source patternmaking software for Windows, macOS, and Linux. It reads multi-size measurement files for standardized sizes and individual measurement files for custom-fit work, publishes downloadable builds and releases, and links an active website and user forum. | The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. | The guide cites published ISO sources for documented-information, garment-measurement, stitch, and seam boundaries plus current U.S. FTC textile and care-labeling guidance; it discloses that ISO 10013:2021's 2026 systematic review is at close-of-review stage and separates every cited authority from product-specific technical and market decisions. |
| Linked page reviewed | Jul 21, 2026 | Jul 15, 2026 | Jul 27, 2026 |
| Next review due | Jan 17, 2027 | Jul 15, 2027 | Jul 27, 2027 |
| Inspect | |||
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