CLO 3D vs Seamly2D

CLO 3D is fashion design software for designing garments and visualizing how they drape. In Simulation mode, users edit patterns in a 2D window while arranging garments or poses in 3D. Print Layout mode places patterns on prints, calculates fabric consumption, and creates layouts for printing. The software includes a V-Ray renderer; GPU-accelerated V-Ray rendering through Metal is supported on Apple Silicon Macs starting with CLO v2025.0. In the 2026.0 Pattern Information window, users can inspect pattern details and switch between revisions. CLO supports importing and exporting FBX and OBJ files, and DXF-AAMA pattern files. Its API allows customized features through plugins registered from DLL or DYLIB files. CLO runs on Windows and macOS, with listed minimum requirements of Windows 11 64-bit or macOS Sonoma 14, 16 GB memory, and 10 GB SSD space. The Individual plan costs $50 a month or $450 a year; student pricing is $25 a month or $225 a year. A 14-day trial is listed, but there is no free plan.

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.