Nevron Chart for .NET is the leading data visualization component for .NET. In terms of image and presentation quality this component simply has no competition. The component supports numerous charting types, VS design time support, empty data points, UI editors, data grid, build in toolbar, flexible axes, financial functions, HTML image maps, server side events, browser detection, direct stream to browser, custom client side scripts and more.

csNetDownload
This is an ASP.NET class that controls binary file downloads to the browser, allowing for user verification before downloading and record keeping after downloading. There are also functions to retrieve a file from a remote URL. Free trial available.

csNetUpload
This is an ASP.NET class that saves files uploaded through an HTTP post. It can save to disk or export the files as a byte array or a MemoryStream. It requires no dependent code in the client and is suitable for use with HTTP file posting controls.

.NET Media Handler Pro
Media Handler Pro is an ASP.NET video publishing tool for converting any format videos and audios to another format, grab thumbnails from video, post watermark on video, split video into small clips, join videos, extract audio from videos and more.

Aspose.Cells for .NET
Aspose.Cells is a .NET component that supports: Add-ins, VBA and Macros, Opening Excel files to and from Streams, Importing Images, CSV format, Formulae and Charts, Import and Export of data from DataTable, DataGrid, Create or Access Named Ranges et

Mobile ImageDraw
Use GDI+ in ASP.NET Mobile. Deliver real time dynamically generated images such as charts, diagrams or any other graphical application. It renders an image file (wbmp-gif-jpg-png-bmp-ico-tiff) to the image format preferred by client mobile device.