Bytescout Spreadsheet SDK

Read Excel docs, write to Excel files (XLS, XLSX, CSV) in .NET and ASP.NET applications, without MS Excel installed. Supports formula calculations, generates XLS with formatting, multiple worksheets, export and save to PDF. 100% managed C# code. Includes .NET, ActiveX and command line (console) interfaces so can be used from different environments. Works in .NET and also can be used in legacy Visual Basic 6 and ASP classic, Delphi.