From Aspose:
Aspose.Cells delivers real Excel spreadsheets in a desktop or web server environment without Microsoft Excel installed on either server or user's computer. Features includes create REAL Excel spreadsheets with any format, function, chart, picture, comment and even more but without Microsoft Excel, create your own spreadsheets with ease through fully working examples in C# and VB .Net., support Excel spreadsheets for Windows Forms applications and Web Forms applications, support Excel spreadsheets for designer, API or combination of designer and API, and Generate your own spreadsheets with a data base support such as Northwind Database.
