There are many different chart libraries on offer on the market. It is impossible to discuss each one of them. They are open source, but some of them are short-lived in terms of not having a comprehensive set of basic charts, such as pie, line, and bar charts and they look rather unfinished. Here, a handful of commercial and open source products are discussed, including all the basic charts (and some with extras). Some of them still support the Flash plugin, which is an option for backward compatibility, the reason being SVG and canvas are not supported in older browsers. Although some of them are not free for commercial development, which is understandable, they do offer a very affordable price.