ZAMZAR XLS to XML - ZAMZAR XLS to XML is the web based free conversion system by the ZAMZAR that support for the multiple file conversion.
EtherCalc - EtherCalc is a web spreadsheet.
XLS to XML - XLS to XML is the name of a portable and cross-platform application for converting the XML file to the XLS and vice versa.
Aspose.Cells for Cloud - Aspose.Cells for Cloud is a REST based API for processing spreadsheets in the cloud.
XML Converter Standard Edition - XML Converter Standard Edition is a way to transform the data stored in the XML format to XLS format within few minutes.
Simple Spreadsheet - Simple Spreadsheet