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.
C. Bretschneider, S. Zillner, M. Hammon, P. Gass, and D. Sonntag. 30th IEEE International Symposium on Computer-Based Medical Systems, CBMS 2017, Thessaloniki, Greece, June 22--24, 2017, page 213--218. Los Alamitos, CA, IEEE Computer Society, (2017)