Re:Polychart.js: An Interactive Charting Library
by pessimizer on Tuesday April 09, 2013 @04:34PM
(#5521139)
Highcharts isn't free either, at least for commercial use.
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Re:Polychart.js: An Interactive Charting Library
by chaostheory on Wednesday April 10, 2013 @01:26AM
(#5523367)
It's cheaper.
Re:Polychart.js: An Interactive Charting Library
by Ecio78 on Wednesday April 10, 2013 @05:10AM
(#5524030)
Highcharts is cheaper if you use it for a single webpage (90$) but if you want to use if for a real web app it's more expensive (590$ for a single developer).
Having said that, in my enterprise my dev colleagues use it and they think it's a great product.
EDIT: if you host it for a personal/non-profit project it is free according to Creative Commons Attribution-NonCommercial License
another product we've used in the past is Amcharts, good buy maybe not good as Highcharts