Is there a Delphi IDE plugin for XML file editing, validation, formatting?

Question

Are there (free or commercial) IDE editor plugins for Delphi which

• show valid XML tags and parameters automatically while editing (like CodeInsight for HTML does it already) or suggest the correct closing tags, matching the current open tag?
• validate a XML file in the IDE editor against its XSD, or to check its well-formedness?
• format a XML file which is open in the IDE editor (this would be useful for configuration files and scripts)?

These editing capabilities could also be useful for XHTML web page documents in IntraWeb / WebSnap applications, WSDL (Web Service description) and XSD (XML Schema) files, making web application and web service development easier.

Answer 1

Although your requirements are valid, they are too specialized to be included in a Delphi IDE plugin, I think you best option is to use an IDE especially made to handle XML files as Stylus Studio or Altova XML Editor.

Answer 2

As far as an external tool could satisfy your needs, there is the free XmlNotepad which can do all this.
I use it as (very) good alternative to XmlSpy.

Answer 3

No, there is no such addin. All programs suggested above are good. I personally use XML Spy.