The iostat_plotter by Jeffrey B. Layton is a tool for plotting data gathered by iostat. It generates a report in HTML format. More info:
Because there doesn't seem to exist any public repo of it yet (just this dropbox link). for possibly contribution i just created this one. :)
iostat_plotter - Copyright Jeffrey B. Layton License: GNU GPL v2 (http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)