I use C3. Used to use HighCharts at last job. Both are really good. C3 builds on top of D3 (D3 is a requirement). The documentation is ok, but I like the wa

I use C3. Used to use HighCharts at last job. Both are really good. C3 builds on top of D3 (D3 is a requirement). The documentation is ok, but I like the way it builds the more simple charts I'm creating now. HighCharts is full featured and heavier. Its amazing what it can do. It falls back to older browsers fairly easily. It wasn't free though.