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| Decision field | Open accessKnitting Stitch LibraryGlobalRemove | Open accessControlled Tech Pack OrientationGlobalRemove | Free downloadSeamly2DGlobalRemove | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Learn techniques | Source production | Find patterns & fit | Find patterns & fit |
| Area | Techniques & repair | Production | Patterns & fit | Patterns & fit |
| Best for | Learning or comparing knit structures | Understanding what a tech pack must control before using a template or releasing work | Digital pattern drafting | Searching current and out-of-print sewing patterns |
| Know before using | A foundational library, not yet an exhaustive stitch encyclopedia. | 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. | 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 | ||||
| For | Makers | Apparel brands | Both | Makers |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Open access | Free download | Free account |
| Format | Stitch Authority | Stitch Authority | Software | Community |
| Source type | Stitch Authority | Stitch Authority | Open-source project | Community database |
| Source and review | ||||
| What the source establishes | The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. | 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. | 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 reviewed | Jul 15, 2026 | Jul 16, 2026 | Jul 21, 2026 | Jul 21, 2026 |
| Next review due | Jul 15, 2027 | Jul 16, 2027 | Jan 17, 2027 | Jan 17, 2027 |
| Inspect | ||||
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