ProtoChartWhat is ProtoChart? ProtoChart is a new opensource library using Prototype and Canvas to create good looking charts. This library is highly motivated by Flot, Flotr and PlotKit libraries. Features Line, bar, pie, curve, mix, and area charts available Multiple data series on same graph Highly customizable legend support Customizable grid, grid border, background Customizable axis-tick values (both
Developer's Guide - Google Chart API - Google Code
