Open source PostScript interpreter
interpreter, postscript
Solution
I'm not sure there are any others...... Nobody sane would write a PostScript interpreter these days, and most of the old ones have vanished into the mists of history.
Problem
I'm looking for a simple PostScript interpreter to read. What open source PostScript interpreters exist? I know about Ghostscript of course and also about xpost. Oh, I've just found ralpage, but it does not compile out of the box in modern compilers.