Microsoft® Excel® Spreadsheet Merging Solution
Combine multiple Excel and OpenOffice™ files as separate spreadsheets with free cross-platform Apps and APIs
Free Online App for Excel Merging
Combine XLS, XLSX, XLSB, XLT, XLTX, XLTM, XLSM and ODS files to a single spreadsheet
High Code APIs to Combine Spreadsheet Data
Native APIs to combine Excel & OpenOffice spreadsheets using .NET Core, Xamarin, Java, C++, Android, Node.js, PHP & Python