29 Vector Drawing Programs
Ed Pegg writes "I did a survey of all available vector-based drawing programs, in anticipation of SVG in the next Firefox. I found 29 different vector drawing programs. Of these, 14 were free or open source. More than I expected. Did I miss any good ones?"
cat > file.ps
10 10 moveto
50 50 lineto
stroke
showpage
Perhaps cat is not the easiest to use, but it easily the most powerful and easier to control from another program! It can also be trivially scripted to produce eps and pdf, or later updated with $EDITOR.