oglpen is a new “pen” contributed by Vladimir Bashkardin. It displays Vplot files using OpenGL and GLUT and can serve as a replacement for xtpen.
vpconvert is a script for converting Vplot files to other formats (EPS, PS, PDF, PPM, TIFF, JPEG, PNG, GIF, MPEG, AVI, SVG). You can use it for converting one file
or a collection of files