Robert Polubinski, Editor / Informer Technologies, Inc. / December 13, 2012
Any program from this set is designed to provide XML file editing capabilities combined with the advantages of open source applications. They can offer XML validation, code completion, code formatting, XML text encoding, selection, conversion and much more.
Download solution synonyms: Edit XML File with Open Source Tool, Open Source XML Modifier, Open Source Program to Edit XML
These programs can help you with what you're intending to do:
Open XML Editor is a very effective and handy tool through which the user can edit XML documents and it also consists of some built-in features like a XML tester as well as a DTD validator. It includes search or replace in text or hex mode and has some built-in features like a DTD validator that also offer support to remote DTDs.
XPontus XML Editor is a simple XML Editor oriented towards text editing. It can perform validation(DTD, XML Schema, Relax NG, Batch XML validation), XSL transformations(HTML, XML, PDF, SVG), schema/DTD generation, XML/DTD/HTML/XSL code completion, code formatting and much more.
XML Copy Editor is a powerful yet easy to use XML (Extensible Markup Language) editor that allows the developer to create his own elements. XML can be used for a myriad of purposes, including serializing data, like YAML and JSON languages do. Some of the features this incredible program includes are: DTD/XML Schema/RELAX NG validation, XSLT, XPath, pretty-printing, among many others.
AjRa XML Editor is a handy, Java based XML editor developed using Swing and Xerces parser.It uses Swing Api's for GUI and Xerces parser.It has XML-HTML conversion feature, XML Well-Formity Check, Tree conversion, DTD and XSD validation.It's useful and very easy to use application.