MOSO has released version 1.5.0 of the Xmplify XML Editor (http://xmplifyapp.com) for Mac OS X. It’s a XML editor built specifically for Mac OS X 10.6 and higher.
Xmplify XML Editor provides a fully XML-aware editing environment with DTD and XML Schema-based auto-completion, automatic document validation, XSLT and XPath support, live HTML preview and much more. Version 1.5.0 improves auto-completion and validation performance for documents with complex schemas, plus fixes and other improvements.
Xmplify costs US$59; volume and educational discounts are available. Version 1.5.0 is a free upgrade for Xmplify 1.x users.