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Decision fieldFree accountThreadloop Sewing Pattern DatabaseGlobalRemoveOpen accessHook & Needle Diameter ReferenceGlobalRemoveQuote-basedLectra ModarisGlobalRemoveFree downloadSeamly2DGlobalRemove
Decision fit
Primary jobFind patterns & fitLearn techniquesFind patterns & fitFind patterns & fit
AreaPatterns & fitYarnPatterns & fitPatterns & fit
Best forSearching current and out-of-print sewing patternsChecking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gaugeEnterprise pattern rooms and supplier file exchangeDigital pattern drafting
Know before usingCommunity 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 reference is not a dimensional measurement, manufacturer inspection, UK or Canadian conversion, steel-hook chart, tool recommendation, yarn assignment, gauge result, or proof that a proposed tool will produce the required fabric.The page does not publish price and its product-quality, error-prevention, data-loss, and fit statements are vendor claims. Capabilities vary across Essential, Classic, Expert, 3D, and add-ons. Confirm licenses, modules, support, system and file requirements, then pilot approved blocks, grade rules, supplier reopen, material and mannequin data, plot or cut outputs, and risk-appropriate physical fit and production checks.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.
Practical access
ForMakersMakersApparel brandsBoth
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessFree accountOpen accessQuote-basedFree download
FormatCommunityStitch AuthoritySoftwareSoftware
Source typeCommunity databaseStitch AuthorityFirst-party platformOpen-source project
Source and review
What the source establishesThreadloop'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.The lookup reproduces the current public Craft Yarn Council metric and U.S. alias rows and follows the Council's warning that company letter and number labels vary; blank aliases remain blank instead of being inferred.Lectra's current Modaris page identifies version 2025.2 as the latest listed release and describes a one- to three-year subscription with two releases per year. The modular range covers base-pattern creation and modification, grading and industrialization, native-file supplier work, pattern libraries, synchronized 2D and 3D prototypes, configurable or imported mannequins, and separate conversion and consumption-estimate add-ons.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.
Linked page reviewedJul 21, 2026Jul 16, 2026Jul 21, 2026Jul 21, 2026
Next review dueJan 17, 2027Jul 16, 2027Jan 17, 2027Jan 17, 2027
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