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| Decision field | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove | Open accessFSC Certificate SearchGlobalRemove | Free downloadSeamly2DGlobalRemove | Open accessKnitting Stitch LibraryGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Check standards | Find patterns & fit | Learn techniques |
| Area | Patterns & fit | Standards | Patterns & fit | Techniques & repair |
| Best for | Searching current and out-of-print sewing patterns | Checking chain-of-custody scope for paper packaging, hangtags, and printed materials | Digital pattern drafting | Learning or comparing knit structures |
| Know before using | 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. | A valid certificate covers only its stated organization and scope; it does not prove that a specific packaging order carries an FSC claim or that every party and transaction is documented correctly. | 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. | A foundational library, not yet an exhaustive stitch encyclopedia. |
| Practical access | ||||
| For | Makers | Apparel brands | Both | Makers |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Free account | Open access | Free download | Open access |
| Format | Community | Directory | Software | Stitch Authority |
| Source type | Community database | Official registry | Open-source project | Stitch Authority |
| Source and review | ||||
| What the source establishes | 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. | FSC Search provides current certificate and licensing records with organization, code, type, certification body, status, country, product category, and timestamped record details. | 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 linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. |
| Linked page reviewed | Jul 21, 2026 | Jul 15, 2026 | Jul 21, 2026 | Jul 15, 2026 |
| Next review due | Jan 17, 2027 | Oct 13, 2026 | Jan 17, 2027 | Jul 15, 2027 |
| Inspect | ||||
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