Check out what syncrosoft has contributed to FileCart
Oxygen is a cross platform XML Editor,XSLT/XQuery Debugger and Schema Editor. Can validate XML, XSD, RNG, DTD, Schematron and XSL. Features XSLT transformation and FOP support, code insight,outliner, SVN Client and native XML Databases support.
Syncro SVN Client is a cross platform application supporting all range of Subversion operations, in a very productive user interface.
Oxygen XML Author is a multi platform Visual XML Editor. Supports visual XML editing driven by CSS stylesheets with specializations for DITA, DocBook 4 and 5, TEI P4 and P5, XHTML.