TexGen is a geometric textile modelling software package to be used for obtaining engineering properties of woven textiles and textile composites. More information about the project can be found here http://texgen.sourceforge.net
Instructions for building TexGen from source can be found here http://texgen.sourceforge.net/index.php/Compiling_from_Source
Windows executables and release tarballs can be found here https://sourceforge.net/projects/texgen/