FusionCharts Free
Robert D. Currier at linux.com – FusionCharts Free: Cross-platform charts that rock:
"If you've struggled with GNUplot, JPgraph or other charting applications, FusionCharts Free is a breath of fresh air. Have you dreamed of finding a charting and graphing application that is simple to install, easy to configure, and drop-dead gorgeous? Stop dreaming and download a copy of FusionCharts Free. You'll be producing professional quality charts and graphs in no time."