Open source graph visualization software. Takes descriptions of graphs in a simple text language, makes diagrams formatted as images, SVG for web, PS for PDF, GXL (XML dialect), and more.
S. Canazza, and A. Dattolo. Proceedings of the IASTED European Conference on Internet and Multimedia Systems and Applications - EuroIMSA 2007, Chamonix, France, (May 2007)http://users.dimi.uniud.it/~antonina.dattolo/papers/euroimsa2007.pdf.