Online XML editor, designed for people with no knowledge of XML or any other technology that comes with structured content authoring.
Fonto Editor is the most popular Web-based alternative to Altova XMLSpy.
- Fonto Editor is Paid and Proprietary
Altova XMLSpy is described as 'The industry's best-selling XML editor and development environment for modeling, editing, transforming, and debugging XML-related technologies. It offers the world’s leading graphical schema designer, a code generator, file converters, debuggers, profilers' and is a XML Editor in the development category. There are more than 25 alternatives to Altova XMLSpy for a variety of platforms, including Windows, Mac, Linux, Web-based and Android apps. The best Altova XMLSpy alternative is XML Copy Editor, which is both free and Open Source. Other great apps like Altova XMLSpy are Oxygen XML Editor, Stylus Studio, Altova MapForce and XMLBlueprint.
Online XML editor, designed for people with no knowledge of XML or any other technology that comes with structured content authoring.
Fonto Editor is the most popular Web-based alternative to Altova XMLSpy.
Nodeflip is an all-in-one workbench for anyone who wrangles XML or JSON: developers, QA engineers, data analysts, and API consumers alike. It loads even multi-megabyte zip-files containing thousands of XML/JSON-files directly in the browser, then equips you with the tools you...




Nodeflip is the most popular SaaS alternative to Altova XMLSpy.
XMLFox XML/XSD editor is the Windows based graphical tool for authoring, updating, exploring, well-formedness checking or validating XML documents. XMLFox is a graphical XML editing and validation tool for creating valid, well-formed XML documents and/or XSD Schema.

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 Notepad provides a simple intuitive user interface for browsing and editing XML documents.




Most users think XML Notepad is a great Altova XMLSpy alternative.
The simple yet actually fast source-level XML Editor XML Marker uses a combination of syntax-highlighting editor, tree view, and table views to help you get better insights of your XML code.



A GUI and high-level API for the Saxon XSLT, XQuery and XML Schema processor.
Kernow is an open source tool designed to make it faster and easier to repeatedly run transforms using Saxon. It uses compiled stylesheets, multiple threads and caching resolvers to make the transform.



Easy XML Editor treats XML files as what they are: A hierarchic composition of nodes that have subnodes and attributes. The XML data is presented in an clear and easy to handle way to edit and present.




Complete JSON editor for Windows with JSON syntax-coloring, auto-completion, well-formed checking, JSON to XML/CSV conversions, JSON Schema validator and more.




JSON Buddy is the most popular Android alternative to Altova XMLSpy.

The comfortable approach for editing XML, with clear tree structure and unique features. With XML Assistant you can add and edit XML data using controls (Text fields, Combo boxes, Check boxes, ...), instead of typing the data into the XML code.




XML editor ( XML Viewer ) is an online web-based tool, designed to create, view, format, edit, save and share xml file. This tool provides multiple features which will help you, to create simple and complex xml easily.

Basic support for XSLT 1.0 and Schema Validation, as well as Intellisense.