XML Editor for Mac OSX

Oxygen is the best XML editor available for Mac, targeting a large number of users ranging from beginners to XML experts. It is the only XML tool that supports all of the XML schema languages. The XSLT and XQuery support is enhanced with powerful debuggers and performance profilers. You can use Oxygen XML Editor to work with all XML-based technologies, including XML databases, XProc pipelines, and web services.

gratis - Free WYSIWYG xml editor for Mac (preferably cross-platform) - Software Recommendations Stack Exchange

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XML Editor for Mac OSX

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