Nailed Digital is an official reseller of Stimulsoft Reports. We use it in some of our own products and we believe everyone could benefit from it.

Stimulsoft Reports is a comprehensive reporting platform that includes a complete set of tools to build reports under 
JavaScript, ASP.NET, ASP.NET MVC, .NET Core, WPF, Silverlight, UWP, HTML5, Windows Forms, PHP, Java, and Flex.
Powerful report engine, interactive, and easy-to-use report designer and viewer are at your service.