‪Import or export to Excel merged cells in C#, VB.NET, Java, C++, PHP and other!
http://www.easyxls.com/manual/basics/excel-merge-cells.html

‪Import and export rich text format to Excel cell in C#, VB.NET, Java, C++, PHP and other!
http://www.easyxls.com/manual/basics/excel-rich-text-format.html

‪Calculate Excel formulas by defining formulas with functions or loading template Excel files with predefined formulas in C#, VB.NET, Java, C++, PHP and other!
http://www.easyxls.com/manual/basics/excel-calculation-engine.html

‪Import Excel formula, export Excel with formula and calculate Excel formulas in C#, VB.NET, Java, C++, PHP and other!
http://www.easyxls.com/manual/basics/import-export-excel-formulas.html

‪Import data from Excel, export data to Excel in C#, VB.NET, Java, C++, PHP and other!
http://www.easyxls.com/manual/basics/import-export-excel-data.html

‪Set or read Excel sheet properties in C#, VB.NET, Java, C++, PHP and other! Properties like sheet name, sheet tab color, sheet zoom, hidden sheet, protected sheet or selected sheet are available.
http://www.easyxls.com/manual/basics/sheet-properties.html

‪Create Excel files with multiple sheets in C#, VB.NET, Java, C++, PHP and other! EasyXLS™ library allows you to create Excel files with multiple sheets. There are two types of sheets: worksheets and chart sheets.
http://www.easyxls.com/manual/basics/create-excel-file-multiple-sheets.html

‪Create or read password protected Excel files in C#, VB.NET, Java, C++, PHP and other!

EasyXLS™ library enables you to protect your Excel file from unauthorized access by setting passwords for opening or / and modifying the document. If you set the password for opening the file, the Excel file will be encrypted.
http://www.easyxls.com/manual/basics/password-protected-excel-file.html

‪Create Excel pivot tables in C#.NET, VB.NET, Java, C++, PHP and other, using EasyXLS Excel library! The pivot tables are reports in Excel that summarize worksheet data for a customized and clearer view over it. EasyXLS library allows you to create a pivot table in Excel, to set the data source and to arrange its data and fields into desired areas.
http://www.easyxls.com/manual/basics/excel-pivot-table.html

If not familiar with pivot tables in MS Excel or for technical related details, learn about Excel pivot tables.

‪Create Excel filter or autofilter in C#.NET, VB.NET, Java, C++, PHP and other, using EasyXLS Excel library! It permits to filter a range of data from an Excel sheet and hide records that don’t meet your criteria, displaying just a subset of data in a range of cells.
http://www.easyxls.com/manual/basics/excel-filter-and-autofilter.html