Key Features and Benefits of Oxygen XML Author

Multiplatform availability: Windows, Mac OS X, Linux, Solaris Multilanguage support: English, German, French, Italian and Japanese
Visual WYSIWYG XML editing mode based on W3C CSS stylesheets. Visual DITA Map editor
Closely integrate with the DITA Open Toolkit for generating DITA output Support for latest versions of document frameworks: DocBook and TEI.
Can be used as standalone desktop application, run through Java Web Start or as an Eclipse plugin Non blocking operations, you can perform validation and transformation operations in background
Support for XML, XML Schema, Relax NG , Schematron, DTD, NVDL schemas, XSLT, XSL:FO, WSDL, XQuery, HTML, CSS Support for XML, CSS, XSLT, XSL-FO.
Multiple built-in validation engines (Xerces, libxml, Saxon SA, MSXML 4.0, MSXML.NET) and support for custom validation engines (XSV, SQC). Multiple built-in XSLT transformers (Saxon 6.5, Saxon 9 Enterprise (schema aware), Xalan, libxslt, MSXML 3.0 / 4.0, Microsoft .NET 1.0, Microsoft .NET 2.0), support for custom JAXP transformers.
Support for latest versions of document frameworks: DocBook and TEI. Compare and merge files and directories
Ready to use FOP support to generate PDF or PS documents XInclude support
Support for editing remote files over FTP, SFTP, HTTP / WebDAV and HTTPS / WebDAV Easy error tracking - locate the error source by clicking on it
New XML document wizards to easily create documents specifying a schema or a DTD Context sensitive content assistant driven by XML Schema, Relax NG, DTD, NVDL or by the edited document structure enhanced with schema annotation presenter
XML Catalog support Unicode support
Pretty-printing of XML files Easy configuration for external FO Processors
Apply XSLT and FOP transformations XPath search and evaluation support
Preview transformation results as XHTML or XML or in your browser Support for document templates to easily create and share documents
Canonicalize and sign documents XML project manager
Batch validate selected files in project Fully-fledged client for the Subversion (SVN) versioning system with support for SVN 1.3, SVN 1.4, SVN 1.5 and SVN 1.6 repositories.
Configurable external tools Configurable actions key bindings
Multi-line find and replace support allows regular expressions, is XML aware, is incremental, handles multiple files Special viewer for very large files (up to 2 GB file size).
Associate extensions on Windows Bookmark support
Mac OS X ready Print documents
Model View Attributes View
Multidocument environment SVG Viewer
XSLT 2.0 full support XPath 2.0 execution and debugging support
Dockable views and editors Document folding
Spell checking supporting English, German and French including locals Custom protocol plugin support
All the usual editor capabilities (cut, copy, paste, find, replace, windows management) Drag&drop support
Support for editing, modifying and using files directly from ZIP-type archives Outline view in sync with a non well-formed document