Apple - What's a good XML viewer/editor for Mac OS X?

OS X Software for Editing XML

  • EditX (commercial)
  • oXygen (commercial)
  • XML Edita (commercial)
  • XMLMate (free/open source plugin) for TextMate (shareware)
  • XMPlify (commercial)

Although it's still a beta I have found Xmplify to be a pretty useful XML aware tool. Copes with DTD, XSD, XPath and XSL transformation in the tool

Eclipse works on Mac OS and it is one of the best XML editor around, actually. It has XSD validation, autocompletion towards this schema. Also, it offers a graphical XSD designer.