<oXygen/> is a complete cross platform XML editor providing the tools for XML authoring, XML conversion, XML Schema, DTD, Relax NG and Schematron development, XPath, XSLT, XQuery debugging, SOAP and WSDL testing.
The website of Laurence Anthony. Associate Professor at Waseda University Japan developer of AntConc, a freeware concordancer software program for Windows, Linux, and Macintosh OS X