Easy-To-Use Eclipse XML Editor
The Linux based Compound XML Document Editor (CXDE) from IBM’s software group uses Eclipse Modeling Framework (EMF) to provide a more customized editing experience for developers. CXDE offers a standards-based, model-driven editor for mixed-namespace XML documents such as: XHTML, XForms, XML-Events, SMIL, SVG, VoiceXML, XUL, and MathML. Another good Java-based XML free alternative is Vex.