Web based PHP interface to communicate to Maxima computer algebra system in the server. It takes user input, send it to Maxima, and show the output back to website. It could send almost any commands including 'plot2d' and 'plot3d' to plot graphs.
Graidle is a project that is proposed to create a web application to generate graph diagrams. There are several classes specialized in generating histograms(horizontal),line(filled) pie and spider charts.