XML Copy Editor - XML Copy Editor is a fast, free, validating XML editor.
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.
Altova XMLSpy - The XMLSpy XML Editor is a powerful tool for editing XML and related technologies. It is the only XML Editor with patented SmartFix validation, enterprise-grade editors, converters, debuggers, and code generators.
RoxyApps Spreadsheet Conversion Tool - Converts csv, et, numbers, xls, xlsx, ods and other spreadsheet files to png, pdf, html, jpg, and other formats
Oxygen XML Editor - Oxygen XML Editor provides a comprehensive suite of XML authoring and development tools.
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.