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| Decision field | Free downloadSeamly2DGlobalRemove | Open accessControlled Tech Pack OrientationGlobalRemove | Open accessYarn Database EU Dyers and MakersEuropean UnionRemove | Open accessGOTS Certified SuppliersGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Source production | Choose materials | Check standards |
| Area | Patterns & fit | Production | Yarn | Materials |
| Best for | Digital pattern drafting | Understanding what a tech pack must control before using a template or releasing work | Finding independent EU yarn or fibre dyers with off-Ravelry purchase routes | Checking GOTS certification records |
| 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. | 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. | It is one curator's intentionally selective, off-Ravelry-oriented database, inventories change, and paid supporters can receive rotating priority placement; verify availability, fibre claims, shipping, and terms directly. | A company result is not a blanket approval; confirm the certificate scope, validity, facility, process, product, and transaction documentation for the exact purchase. |
| Practical access | ||||
| For | Both | Apparel brands | Makers | Apparel brands |
| Location or jurisdiction | Global | Global | European Union | Global |
| Access | Free download | Open access | Open access | Open access |
| Format | Software | Stitch Authority | Directory | Directory |
| Source type | Open-source project | Stitch Authority | Community database | Official registry |
| 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 guide cites current ISO sources for documented-information, garment-measurement, stitch, and seam boundaries plus current U.S. FTC textile and care-labeling guidance; it explicitly separates those authorities from product-specific technical and market decisions. | The individually researched database offers free listings and sortable yarn, fibre, designer, editor, accessory, and location views; the EU page spans multiple countries and direct seller profiles. | The official GOTS search exposes certified entities by country, field of operation, product category, and certification detail, including processing and trading scopes. |
| Linked page reviewed | Jul 21, 2026 | Jul 16, 2026 | Jul 15, 2026 | Jul 15, 2026 |
| Next review due | Jan 17, 2027 | Jul 16, 2027 | Jan 11, 2027 | Oct 13, 2026 |
| Inspect | ||||
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