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Decision fieldOpen accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemoveOpen accessControlled Tech Pack OrientationGlobalRemoveFree downloadSeamly2DGlobalRemoveFree accountFOURSOURCE Supplier NetworkGlobalRemove
Decision fit
Primary jobFind patterns & fitSource productionFind patterns & fitSource production
AreaPatterns & fitProductionPatterns & fitProduction
Best forAuditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidenceUnderstanding what a tech pack must control before using a template or releasing workDigital pattern draftingSearching global apparel and textile production capabilities
Know before usingThe record does not create a production grade, supply universal increments or breakpoints, validate a CAD file or fit population, reproduce licensed standards, or replace qualified anthropometric, pattern, technical-design, fit, quality, accessibility, safety, statistical, and user-research review.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.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.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.
Practical access
ForApparel brandsApparel brandsBothApparel brands
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessOpen accessOpen accessFree downloadFree account
FormatStitch AuthorityStitch AuthoritySoftwareMarketplace
Source typeStitch AuthorityStitch AuthorityOpen-source projectCommercial marketplace
Source and review
What the source establishesThe guide cites current ISO body-table, size-designation, and garment-measurement boundaries plus two peer-reviewed studies that tested the relationship between conventional grade rules, anthropometric evidence, and garment fit; it requires product-specific target deltas and validation instead of publishing universal increments.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 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.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.
Linked page reviewedJul 16, 2026Jul 16, 2026Jul 21, 2026Jul 21, 2026
Next review dueJul 16, 2027Jul 16, 2027Jan 17, 2027Jan 17, 2027
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