SciChart is one of the best libraries we've used in our products. The API makes sense and practically ever feature we've wanted is already available and well documented. The SciChart team has also been very responsive to our questions and helped us to resolve our issues quickly. When we first purchased SciChart two years ago, our company was a bootstrapped startup that worried about every single penny. We wrestled with a few free alternatives for several weeks; but after trying SciChart, we realized that we'd ultimately save money and ship our software faster by investing in such an easy-to-use library. I really can't recommend it enough!