XML Diff and Merge Tool: A complete diff and merge solution is available in oXygen XML Editor. It offers both directory and file comparison, six different diff algorithms and multiple levels of comparison.

XQuery Debugging Perspective: oXygen provides XQuery debugging support similar to XSLT debugging. oXygen provides a special layout when used in debugging mode to show the XML source (optional) and the XQuery documents side by side and to show also the result and special XQuery debugging views and toolbars. The perspective allows you to use the common XML and XQuery editor features.

Oxygen XML Author: The oXygen XML Author keeps only the relevant authoring features of oXygen XML Editor enhancing the authors productivity by providing a clean and easy to use interface specially suited for content authors.

SVN Client: The oXygen SVN Client is composed of several views allowing you to browse the Subversion repositories and your local working copies, compare and merge modifications, check the revision history. All the views are dockable. This means you can move them to create the optimal layout for your use case.

Visual XML Schema Editor: All the elements from the XML Schema specification have a graphical representation. The diagram is synchronized in real time with the changes in the document and allows a quick navigation through the schema structure.