Valentina is described as 'open source pattern drafting software tool, designed to be the foundation of a new stack of open source tools to remake the garment industry'. There are six alternatives to Valentina for Windows, Mac, Linux, Online / Web-based and BSD. The best alternative is Seamly2D, which is both free and Open Source. Other great apps like Valentina are Tailornova (Paid), CLO3D (Paid), Polypattern (Paid) and Pattern Design System (Paid).
Seamly2D is a cross-platform patternmaking program which allows designers to create and model patterns of clothing. This software allows pattern creation using either standard sizing tables or an individual’s set of measurements.
Tailornova is the first and only complete web-based 3D fashion design platform that delivers apparel and accessory design tools, expands fashion design skills, maximizes entrepreneurial productivity and simplifies the design process.
OptiTex’s PDS software includes the entire range of pattern making tools one would use for manually drafting patterns on the table yet presents them to the user in very accessible and easy to use toolboxes.