J4L-Chart for Ruby - Version 2.1 Charting package for Ruby and ruby on rails. It supports more than 18 different chart types and combinations of them like piecharts, linecharts, barcharts, radarcharts, 2D, 3D, open/close charts, bubble charts, scatter charts, curves, candlesticks and a richt set of features like labels, notes, multiple axis, logarithmic axis, date axis, transparencies, stacked axis and more. It requires RMagick and at least Ruby 1.8.6.