Compare two to four resources
Compare textile resources.
Review access, scope, source evidence, and limitations side by side before choosing what to inspect next.
Selected resources
4 resources selected.
Swipe the table sideways to inspect all 4 routes
| Decision field | Open accessSeam Allowance ConverterGlobalRemove | Free + paidPattern TestersGlobalRemove | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove | Open accessNMSU Pattern Alteration GuideUnited States · North AmericaRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Find patterns & fit | Find patterns & fit | Find patterns & fit |
| Area | Patterns & fit | Patterns & fit | Patterns & fit | Patterns & fit |
| Best for | Working between pattern systems | Coordinating an independent sewing-pattern test | Searching current and out-of-print sewing patterns | Checking a common flat-pattern alteration method |
| Know before using | A unit reference; the correct allowance depends on material, seam type, and production method. | 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. | 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. | The guide's general womenswear diagrams and ease ranges are teaching examples, not an individual diagnosis, current commercial-pattern specification, or complete fitting course. A named symptom can have several causes, and alterations may affect adjoining seams, facings, collars, sleeves, balance, and style. Verify the method against the exact pattern and test the coordinated changes on a muslin. |
| Practical access | ||||
| For | Both | Apparel brands | Makers | Makers |
| Location or jurisdiction | Global | Global | Global | United States · North America |
| Access | Open access | Free + paid | Free account | Open access |
| Format | Stitch Authority | Software | Community | Reference |
| Source type | Stitch Authority | First-party platform | Community database | Government guidance |
| 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. | 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. | 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. | New Mexico State University's current Cooperative Extension Guide C-228 explains three alteration methods, folding out fullness, slashing and spreading or overlapping, and redrawing darts or seams. It provides illustrated bodice, sleeve, skirt, and trouser examples and tells readers to compare body measurements plus intended ease with the pattern while preserving grain, design lines, related-piece changes, and comfort ease. |
| Linked page reviewed | Jul 15, 2026 | Jul 21, 2026 | Jul 21, 2026 | Jul 21, 2026 |
| Next review due | Jul 15, 2027 | Jan 17, 2027 | Jan 17, 2027 | Oct 19, 2026 |
| Inspect | ||||
How to compare
Use the rows to narrow your next check.
- Choose resources that could solve the same job.
- Eliminate access, scope, or jurisdiction mismatches.
- Read each limitation before following the source.
- Verify project-specific claims with the source or provider.