Syncfusion offers a comprehensive suite of ASP.NET Web Forms components for enterprise web development. It includes several complex widgets like DataGrid, Chart, Gantt, Diagram, Spreadsheet, Schedule, Pivot Grid and much more.

Key features -

• With over 40 components, the toolkit contains all the components that are typically required for building line-of-business applications.
• The mark up required to render the components has been optimized to ensure quick loading of the user interface.
• There is built-in integration with all the popular third-party frameworks like AngularJS, KnockoutJS, jQuery, TypeScript, and Bootstrap.
• All components ship with several stunning built-in themes. However, if you need to customize the appearance then you can easily do so using the Theme Studio utility.
• Compliant with all popular browsers including IE8+, Microsoft Edge, Chrome 17+, Firefox 22+, Safari 5+ and Opera 12+.
• All components have been optimized to seamlessly work with touch, mouse, or keyboard input.
• Easily develop applications that work well on desktop, tablet and phone devices. The controls render adaptively based on the device that it is currently rendering on to provide an optimal usage experience.
• All components can be easily customized to use resources from the desired locale.