ZGraph

Draw 15 graphs including parametric and polar functions. Compute 9 commands like integrals, derivatives, zeros, min and max values of cartesian functions. See the results graphically on the screen. Track x-y values. Zoom in and zoom out. Users can input data in separate files and export to the graphing engine. Graph images can be saved as .png files with white background for easier printing. With more than 150 builtin function library, it is easier to draw graphs of curve fitted data, including polynomial best fit.
Draw scatter plots with standard deviations. Choose various colors for the graphs and a choice of three background colors.

To enter input in international versions, set the input language for onscreen keyboard to be english.