When comparing GraphicsJS vs NextCharts, the Slant community recommends GraphicsJS for most people. In the question“What are the best JavaScript drawing libraries?” GraphicsJS is ranked 10th while NextCharts is ranked 19th. The most important reason people chose GraphicsJS is:
Not only Bezier curves but also any lines, shapes, arcs, etc. out-of-the-box.
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Pros
Pro Powerful line drawing
Not only Bezier curves but also any lines, shapes, arcs, etc. out-of-the-box.
Pro Convenient API
Clear and concise API with chaining support.
Pro Virtual DOM
Rapid drawing. Only what is necessary is drawn.
Pro Has its own transformation engine
No need to use embarrassing in-browser transformations.
Pro Legacy browser support
IE6+.
Pro Smart layering system
With z-index.
Pro Rich text features
Multiline text support, text measurement, wrap, indent, spacing, align, etc.
Pro Full accessibility (Section 508)
Pro Events support
All browser events are dispatched in the same way in virtual DOM structure also.
Pro Great diversity
Besides having all consecrated charts like line, area, bar, horizontal bar, pie, bubble , it can have styles for line dots (solid dot, hollow dot, star, bow, anchor) or bar types (like dome, cylinder, parallelepiped). It has support for stacked bars, negative bars, combo bar-line charts, dual axis, click events and tooltips.
Pro Free
Completely free and open-source as it uses the Apache license.