Wijmo, combined with Knockout, makes programming interactive applications easy. In the rating system example, we have seen how observables that are computed from other observables work. We've used a dependent observable to calculate the total number of points used as each rating changes. In the Dashboard example, we built a dynamic table that is updated by the server with the Wijmo grid widget. Also, we coded the Send Message page to use the Wijmo widgets in combination with Knockout bindings. The next chapter introduces mobile web development with Wijmo Mobile.