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Compare textile resources.
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| Decision field | Open accessPattern Grading & Size-Run Validation RecordGlobalRemove | Free downloadSeamly2DGlobalRemove | Open accessKnitting Stitch LibraryGlobalRemove | Free + paidThreadloop Sewing Pattern DatabaseGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Find patterns & fit | Learn techniques | Find patterns & fit |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Patterns & fit | Techniques & repair | Patterns & fit |
| Best for | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Digital pattern drafting | Learning or comparing knit structures | Searching current and out-of-print sewing patterns |
| Know before using | The 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. | 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. | 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 | Apparel brands | Both | Makers | Makers |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Free download | Open access | Free + paid |
| Format | Stitch Authority | Software | Stitch Authority | Community |
| Source type | Stitch Authority | Open-source project | Stitch Authority | Community database |
| Account, payment, and exit | ||||
| Access scope | Not yet reviewed at this level. | Not yet reviewed at this level. | Not yet reviewed at this level. | Sewer searching pattern records or organizing patterns, projects, fabric, notions, and private files. |
| Before an account | Not yet reviewed at this level. | Not yet reviewed at this level. | Not yet reviewed at this level. | Browse the pattern database, guide, designers, publications, and public community areas without creating an account. |
| Free-account boundary | Not yet reviewed at this level. | Not yet reviewed at this level. | Not yet reviewed at this level. | A free account needs no card and supports a stash, wishlist, projects, reviews, and personal organization. |
| Payment boundary | Not yet reviewed at this level. | Not yet reviewed at this level. | Not yet reviewed at this level. | Plus adds PDF pattern storage, collections, saved searches, bulk editing, and other workflow features on monthly or annual billing. |
| Cancellation or exit | Not yet reviewed at this level. | Not yet reviewed at this level. | Not yet reviewed at this level. | Cancel through an in-account link. Paid features remain through the current billing cycle, then the account returns to free features. |
| Saved work and data | Not yet reviewed at this level. | Not yet reviewed at this level. | Not yet reviewed at this level. | The terms say submitted materials remain yours, but the checked public pages do not explain a full export or how stored PDFs behave after downgrade. Keep originals outside the platform. |
| Source and review | ||||
| What the source establishes | The 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 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. | 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. Current terms state that the free plan requires no card, paid upgrades start billing immediately, cancellation retains paid features through the current cycle, and the account then returns to free features. |
| Linked page reviewed | Jul 27, 2026 | Jul 21, 2026 | Jul 15, 2026 | Jul 28, 2026 |
| Next review due | Jul 27, 2027 | Jan 17, 2027 | Jul 15, 2027 | Jan 24, 2027 |
| Inspect | ||||
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