I'm building such a product at my startup Pretty Graph. Please email me at hrishi@prettygraph.com if you'd like to discuss your needs. Also, check out http://w

I'm building such a product at my startup Pretty Graph. Please email me at hrishi@prettygraph.com if you'd like to discuss your needs. Also, check out http://www.metricly.com http://www.metricly.com and http://chart.io http://chart.io.