igspread
converts between IGES file and text file
Command-line interface program that converts between IGES file and text file.
IGES files are compatible with most of CAD systems. This program permits you to convert curves and points created in CAD program into coordinates in text file or you can do the opposite - convert text files into curves. It is especially suitable for curves described by hundreds of coordinates, e.g. airfoil contours of aircraft wings.
Output filename is either out.txt or out.igs.