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.
XML Tree is a basic cross-platform tree view XML editor. It displays XML files as tree views and allows basic operations: adding, editting and deleting text nodes and their attributes. The main goal is providing a simple tool to create/edit XML configuration files for users...
XML editor and comparer using a grid view (tables) and also xml splitter and joiner. It supports JSON and xml validation with XSD.
It makes editing of complex xml files simple and comparable to the very expensive xmlspy
XML Viewer is a program that can be used to examine XML files in an intuitive environment. It is free for personal/non-commercial use. A license that lets you use it for commercial activities can be obtained by following the links in the About dialog.
Advanced JSON Viewer transforms raw JSON data into an elegant, interactive viewing experience right in Safari.
Advanced JSON Viewer is the most popular iPhone & iPad alternative to Altova XMLSpy.
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It's extremely light, user-friendly, and doesn't need to be installed.