ctioga2 is a complete rewrite of ctioga, avoiding the mistakes made in the original design. It is much more flexible and powerful than the old ctioga. It features most of what the old ctioga could do, but it also supports plots of 3D data (XYZ color maps, for instance) and contour plots. All users of ctioga are encouraged to switch to ctioga2. Development of the old ctioga has stopped.