Xceed Ultimate Suite provides over 100 components. It gives developers all of Xceed's user interface and data manipulation components. Includes a fast Silverlight datagrid, an advanced WPF grid control and perfect WPF themes for your entire app. Plus includes dozens of tools for devs and designers for a superb UX.
All .NET / Silverlight / Windows Phone controls are written in managed code and all ActiveX/COM controls (except SmartUI ActiveX) are written in ATL 3.0 and support both the STA and MTA multi-threaded apartment models. There are no external dependencies required.