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| Decision field | Open accessTech Pack Definition, Contents & LimitsGlobalRemove | Open accessPattern Test Brief TemplateGlobalRemove | Free + paidPattern TestersGlobalRemove | Free downloadSeamly2DGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Source production | Find patterns & fit | Find patterns & fit | Find patterns & fit |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Production | Patterns & fit | Patterns & fit | Patterns & fit |
| Best for | Understanding what a tech pack must control before using a template or releasing work | Planning a sewing, knitting, or crochet pattern test | Coordinating an independent sewing-pattern test | Digital pattern drafting |
| Know before using | 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. | The workflow is not a contract or quality certification; local legal duties and technical review may still apply. | The interface and plan description do not prove tester reach, completion, feedback quality, fit validity, export quality, uptime, support, or suitability for an established release process. Measurements and photos can be sensitive personal data. Run a non-critical pilot, review the current privacy and service terms, define consent and photo rights, test exports and deletion, and keep pattern approval and release responsibility with the designer. | 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 | ||||
| For | Apparel brands | Both | Apparel brands | Both |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Open access | Free + paid | Free download |
| Format | Stitch Authority | Stitch Authority | Software | Software |
| Source type | Stitch Authority | Stitch Authority | First-party platform | Open-source project |
| Source and review | ||||
| What the source establishes | The guide cites published ISO sources for documented-information, garment-measurement, stitch, and seam boundaries plus current U.S. FTC textile and care-labeling guidance; it discloses that ISO 10013:2021's 2026 systematic review is at close-of-review stage and separates every cited authority from product-specific technical and market decisions. | The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. | Pattern Testers currently offers application intake, tester selection, feedback, photos, approvals, issue tracking, revisions, a reusable tester directory, and release deadlines. The public pricing page shows a limited free plan and paid Pro and Business tiers. Its June 2026 privacy policy lists names, email addresses, measurements, photos, feedback, application history, and assignments among the data processed. | 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 reviewed | Jul 27, 2026 | Jul 15, 2026 | Jul 21, 2026 | Jul 21, 2026 |
| Next review due | Jul 27, 2027 | Jul 15, 2027 | Jan 17, 2027 | Jan 17, 2027 |
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