JSON Editor Online - View, edit and format JSON online
XML Copy Editor - XML Copy Editor is a fast, free, validating XML editor.
JSON Crack - Seamlessly visualize your JSON data instantly into graphs; paste, import or fetch!
Oxygen XML Editor - Oxygen XML Editor provides a comprehensive suite of XML authoring and development tools.
JSONFormatter.org - Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON
Liquid Studio - XML Tools Provider: XML Studio - Graphical XML Schema Editor.