garment.dev vs Seamly2D

garment.dev is browser-based software for apparel pattern work, from drafting and grading to marker nesting and production DXF. Its workspace brings patterns together with construction specifications, people, moodboards, tech packs, and bills of materials. Editing tools include pen and trace operations, linked edits, darts, pleats, fullness, seam walking, seam allowance, and photo digitization. Users can define X/Y grading rules, review validation reports, and build fabric markers with orientation, selvedge, and nap constraints. The software imports and exports DXF-AAMA/ASTM, with named interchange systems including Gerber AccuMark, CLO3D, Optitex, and StyleCAD. Team tools include roles, shared boards, live editing, follow mode, comments, and read-only mobile review. Garment.dev is in open alpha and access is by invitation. The Hobby plan is free, with limits including 2 patterns, 1 tech pack, and 1 marker. Individual is $16.20 a month, billed for 12 months; Production is $24.30 a month, billed for 12 months; Studio is $45 a month, billed yearly, with a two-person minimum.

Seamly2D is free, open-source fashion design software for creating garment patterns on Windows, Linux, and MacOS. Its pattern workflow supports adapting earlier designs and working with size charts, made-to-measure data, and converted body scans. The site lists apparel, costumes, athletic wear, pet gear, outdoor products, and upholstery as possible applications. Seamly describes a process extending from design through manufacturing for physical and digital products, and says its software integrates 2D, 3D, and Mixed Reality. A beta process described for 3DLOOK MOBILE TAILOR measurements converts CSV files into Seamly measurement files by email. The download process asks for a name, email, operating system, and intended use before emailing a download link. The download page says Seamly Systems does not sell or share the personal information it holds. A user forum is available for software discussion. Seamly2D includes 2D pattern making and size grading, with SVG listed as an export format.