FreeSewing
freesewing.eu
Open-source platform that generates made-to-measure sewing patterns from custom measurements, design choices, and pattern adjustments for multiple garment types.
Why it is useful
FreeSewing solves a real problem that commercial pattern sites often leave untouched: fit. Because patterns are generated from measurement sets and can be customized deeply, it is more useful than downloading a static PDF and hoping standard sizes behave. The open-source approach makes it feel like a craft tool built for practitioners rather than for upsells.