Telerik RadControls for ASP.NET AJAX suite is the most widely used commercial AJAX toolkit according to a survey on the Ajax development and JS libraries, prepared by Simone Chiarreta, an Italian .NET developer, architect and Microsoft MVP.
The survey was focused on the adoption of the AJAX technology among web developers, as well as the most used toolkits for development of AJAX applications. More than 2500 developers took the survey, and 71.4% of them stated that they are using jQuery, second comes the Ajax Control Toolkit with 58,8%, followed by the core ASP.NET Ajax library, which is used by 44,8%. About 75% of the respondents say that they are using the AJAX technology either in production, development or prototype.
The survey results show that Telerik RadControls for ASP.NET AJAX is the most used commercial toolkit for building AJAX applications in the .NET space. 15,6% out of all participants in the survey stated that they prefer developing with RadControls.
Detailed information on the survey results