Is there anything better than Telerik's Kendo grid on the market today for responsive web pages?

There are many popular libraries out there for making responsive pages. As you likely know the by far most popular is probably Bootstrap, you will find it at the core many sites. It does require learning the css/html syntax for their columns, but it is nearly a requirement for any front end designer/dev. (Understanding the principals of the framework even if you don’t use Bootstrap is vital to implementing good responsive design.) Bootstrap isn’t a cure all, and that is how many of these other libraries came about and there are other alternatives available, here are a few worth looking into:

Ionic, Sencha Touch, Jquery UI, Onsen UI, NativeScript (and dozens of others I can’t recall right now.)

You would do well to review several of their API’s and their pricing (if they aren’t open source) and speak to your back end developer to determine which libraries integrate the best into your current or planned platform. If you are using React or something similar you will likely want to stick to the front end libraries that play nice with their platform, they will help you jump-start your development.

The best choice is the one you are comfortable with and understand, nearly all of the above frameworks can be modified to fit your needs. Another thing to consider is are you focused on mobile first or need something that is as cross browser compatible as possible.