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| Decision field | Free downloadSeamly2DGlobalRemove | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove | Free accountFOURSOURCE Supplier NetworkGlobalRemove | Open accessGOTS Certified SuppliersGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Find patterns & fit | Source production | Check standards |
| Area | Patterns & fit | Patterns & fit | Production | Materials |
| Best for | Digital pattern drafting | Searching current and out-of-print sewing patterns | Searching global apparel and textile production capabilities | 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. | Community members add and quality-control the records, so confirm sizing, measurements, fabric suggestions, format, availability, errata, license, and purchase terms with the designer or publisher. Adding an entry to a stash does not provide the pattern files. Saved searches and private PDF storage are paid Plus features, and a listing or review does not establish pattern accuracy or fit. | The company count is a changing platform claim. Search fields, profiles, certificates, locations, and account access do not independently verify the legal entity, factory ownership, capability, capacity, certificate validity or scope, compliance performance, delivery, or project fit. Confirm the site and subcontracting, credentials with issuers, samples, audits when appropriate, specifications, contracts, and commercial terms. | 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 | Makers | Apparel brands | Apparel brands |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Free download | Free account | Free account | Open access |
| Format | Software | Community | Marketplace | Directory |
| Source type | Open-source project | Community database | Commercial marketplace | 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. | Threadloop's official guide describes an independent, fully crowdsourced database covering available and out-of-print sewing patterns. Its search supports pattern type, fabric type, age group, body type, cup size, level, format, file features, language, measurements, availability, and other filters; members can also track a stash, wishlist, projects, reviews, and discussions. | FOURSOURCE's current public network page presents an operator-reported global company count and country or territory search. It says logged-in users can narrow results by compliance certificates, product groups, fabric types, target groups, minimum order quantities, and other fields, with a free-trial and supplier sign-up route. | 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 21, 2026 | Jul 21, 2026 | Jul 15, 2026 |
| Next review due | Jan 17, 2027 | Jan 17, 2027 | Jan 17, 2027 | Oct 13, 2026 |
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