MagForms for .NET 

MagForms for .NET is a .NET library which allow .NET WinForms to be magnetized together similar to Winamp. MagForms also provides seamless Windows appbar support. MagForms are non-intrusive to your application - there are no base classes to inherit!
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FlexCell Grid Control for .NET 

FlexCell is a flexible and easy to use grid control, it provides comprehensive functions, such as exporting to Excel, HTML and XML, importing from XML, printing, preview, sorting, charting, cell merging, virtual grids, etc.
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