This site provides users with an online calculator for various topics arising from numerical analysis, linear algebra, and differential equations. It allows the user to plot graphs by plugging values in the equations of interest. It has a tutorial (theoretical component) with step-by-step explanations and examples. In addition to that, the site contains various theoretical and numerical examples in differential equations, numerical analysis, optimization, and linear algebra with very detailed explanations. It also provides MATLAB tutorials for some available topics in the site.