[castell]

I used flot too, as a replacement for Highcharts.

The only downside I dislike about flot is that it depends on JQuery. As I otherwise don't rely on JQuery at all, it means another ~80kb of additional JS code. Beside that, flot seem to be a very good free alternative.

[akg_67]

I started out with flot after noticing the high cost of Highcharts. But now have been switching out flot with dimple.js and d3.js. The charts are much better with dimple/d3.

[castell]

Interesting. I considered graph libs based on-top of D3. But D3 is equally big in JS file size to JQuery. And SVG wasn't supported in older Android (2.3) and slower in Firefox and Chrome 3 years ago. So flot with its Canvas rendering "won" in the end.