What are some alternatives?
When comparing DevExtreme and UIKit, you can also consider the following products
Bootstrap - Simple and flexible HTML, CSS, and JS for popular UI components and interactions
JQWidgets - Unique toolkit for HTML5 Web development
Semantic UI - A UI Component library implemented using a set of specifications designed around natural language
Kendo UI - Fast, light, complete: 70+ jQuery-based UI widgets in one powerful toolset
Foundation - The most advanced responsive front-end framework in the world