We would like to express our gratitude to several people who have contributed to PyXPlot – first and foremost to Jörg Lehmann, André Wobst and Michael Schindler for writing the PyX graphics library for Python, upon which this software is heavily built. We would also like to think all of the users who have got in touch with us by email since PyXPlot was first released on the web. Your feedback and suggestions have been gratefully received.