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Decision fieldOpen accessControlled Tech Pack OrientationGlobalRemoveOpen accessGOTS Certified SuppliersGlobalRemoveFree downloadSeamly2DGlobalRemoveFree accountThreadloop Sewing Pattern DatabaseGlobalRemove
Decision fit
Primary jobSource productionCheck standardsFind patterns & fitFind patterns & fit
AreaProductionMaterialsPatterns & fitPatterns & fit
Best forUnderstanding what a tech pack must control before using a template or releasing workChecking GOTS certification recordsDigital pattern draftingSearching current and out-of-print sewing patterns
Know before usingAn 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.A company result is not a blanket approval; confirm the certificate scope, validity, facility, process, product, and transaction documentation for the exact purchase.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.
Practical access
ForApparel brandsApparel brandsBothMakers
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessOpen accessOpen accessFree downloadFree account
FormatStitch AuthorityDirectorySoftwareCommunity
Source typeStitch AuthorityOfficial registryOpen-source projectCommunity database
Source and review
What the source establishesThe 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 official GOTS search exposes certified entities by country, field of operation, product category, and certification detail, including processing and trading scopes.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.
Linked page reviewedJul 16, 2026Jul 15, 2026Jul 21, 2026Jul 21, 2026
Next review dueJul 16, 2027Oct 13, 2026Jan 17, 2027Jan 17, 2027
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