A7Soft xml2csv is a powerful command line tool for converting XML files to CSV values

A7Soft csv2xml
A7Soft csv2xml is a powerful command line tool for converting CSV to XML

oXygen XML Developer
Oxygen XML Developer is a multi platform XML Editor. Supports visual XML editing driven by CSS stylesheets with specializations for DITA, DocBook 4 and 5, TEI P4 and P5, XHTML.

ExamXML
ExamXML is the best visual XML differencing tool for comparing and merging XML documents with highlighting differences between XML files. ExamXML compares XML data from sources of many types such as XML and CSV files, SQL server.

0-Code HTML Converter
For busy web-developers: Convert HTML to most used script languages (PHP,Perl,ASP,JSP,JavaScript); ASCII text and RTF to HTML... In a second.

A7Soft xml2csv
A7Soft xml2csv is a powerful command line tool for converting XML files to CSV values