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| Decision field | Free downloadSeamly2DGlobalRemove | Open accessSample Review & Approval RecordGlobalRemove | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove | Free + paidCrochet Guild of AmericaUnited States · North AmericaRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Source production | Find patterns & fit | Learn techniques |
| Area | Patterns & fit | Production | Patterns & fit | Techniques & repair |
| Best for | Digital pattern drafting | Approving a named sample without accidentally approving bulk | Searching current and out-of-print sewing patterns | Crochet education and professional community |
| Know before using | 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 record does not validate every size or user, prove bulk conformity, prescribe universal defect classes or AQL, replace testing or inspection, or establish compliance. | 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. | Public pages explain the organization and calendar, while many classes, meetings, programs, and benefits require registration, payment, or membership. CGOA's statement that it sets a national standard is its own mission language, not evidence that every class, member, chapter, instructor, or portfolio is independently accredited, approved, or suitable for a particular learner. |
| Practical access | ||||
| For | Both | Apparel brands | Makers | Makers |
| Location or jurisdiction | Global | Global | Global | United States · North America |
| Access | Free download | Open access | Free account | Free + paid |
| Format | Software | Stitch Authority | Community | Community |
| Source type | Open-source project | Stitch Authority | Community database | Industry organization |
| Source and review | ||||
| What the source establishes | 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 record applies version and lot controls from textile testing plus current ISO and ASQ acceptance-sampling boundaries to separate sample approval from bulk release. | 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. | CGOA's current public pages identify it as a volunteer-led nonprofit and describe online education, in-person and online events, local chapters, mentorship, scholarships, professional programming, and portfolio-based Masters skill-building programs. Its calendar distinguishes specific classes, meetings, retreats, and professional events. |
| Linked page reviewed | Jul 21, 2026 | Jul 15, 2026 | Jul 21, 2026 | Jul 21, 2026 |
| Next review due | Jan 17, 2027 | Jul 15, 2027 | Jan 17, 2027 | Jan 17, 2027 |
| Inspect | ||||
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