Graph Paper Generator generates Cartesian (square), Multilevel Cartesian, and Hexagonal graph paper. It has a WYSIWYG configuration interface with a docking property window that allows fast, interactive specification of the graph paper. The display updates in real-time as you make specification changes. Cell sizes are specified in millimeters, and line thicknesses are specified in printer pixels. You can customise line color, thickness, style (dash, dot, solid, etc). You can set a background color for the page. Multilevel Cartesian allows larger grouping cells to be subdivided by smaller cells with differing line style/color/thickness. Hexagonal graphs allow you to specify the length of the edge of the hexagon, and therefor the size. Designs can be loaded and saved to files for sharing via the web and email. Includes print-preview functionality to save paper.