Best Free XML Editors

Notepad++ is a free source code editor and Notepad replacement that supports several languages. Running in the MS Windows environment, its use is governed by GNU General Public License. Based on the powerful editing component Scintilla, Notepad++ is written in C++ and uses pure Win32 API and STL which ensures a higher execution speed and smaller program size. By optimizing as many routines as possible without losing user friendliness, Notepad++ is trying to reduce the world carbon dioxide emissions. When using less CPU power, the PC can throttle down and reduce power consumption, resulting in a greener environment.

A simple editor for XML and JSON files based on a grid table view with some unique functionalities. User doesn't need to care about xml or json rules. It's possible to compare and merge xml files in a grid view. There is a support for validating xml with XSD schema(s). It can be used also for splitting big xml files and joining them back together or as a simple text editor for large files. Commercial users are able to create and run scripts. It's very easy to copy/paste data from/to spreadsheet editor. Adjacent text editor supports big files and very long lines. No installation is required, one file (1.4 MB). Free for a non-commercial use. It should run on Win 7, 8, 10 and 11 (using .NET Framework 4.5).

Komodo Edit is a great editor if you’re looking for something powerful, yet simple. Komodo IDE provides more robust functionality such as debugging, unit testing, code refactoring and code profiling. Software vendors are increasingly the front line of security for their customers since one compromised patch or upgrade can make hundreds or even thousands of your customers susceptible to cyberattacks. Don’t be the next SolarWinds. Rather than implementing multiple point solutions and custom code, the ActiveState Platform can provide you with an out-of-the-box solution that helps ensure the security and integrity of the open source components you import, work with and run.

Load your XML file to the online XML editor. You can choose any of the methods listed in the menu: paste the data directly to the Input Box, open the file from your local file system or get it from internet By URL. After the XML data is loaded, it will be displayed in a hierarchical XML Grid which allows you to easily navigate the tree structure. You can add, edit, or delete any node or brach of the tree structure. If you want to save the edited XML document you can choose the Save function from the menu, the XML data will be displayed in a nice formatted text. Load your XML data into the Online Editor. The XML code will be validated against W3C XML 1.0 specifications.

XML Notepad provides a simple intuitive User Interface for browsing and editing XML documents. Tree View synchronized with Node Text View for quick editing of node names and values. Drag/drop support for easy manipulation of the tree, even across different instances of XML Notepad and from the file system. Good performance on large XML documents, loading a 3mb document in about one second. Instant XML schema validation while you edit with errors and warnings shown in the task list window. Intellisense based on expected elements and attributes and enumerated simple type values. Support for custom editors for date, dateTime and time datatypes and other types like color. Handy nudge tool bar buttons for quick movement of nodes up and down the tree. Handy "XML statistics" tool to summarize info about your XML documents.

Liquid Studio provides an advanced toolkit for XML and JSON development along with Web Service Testing and Data Mapping and Data Transformation tools. The Development Environment contains a complete set of tools for designing XML and JSON data structures and schemas. These tools provide editing, validating and advanced transformation capabilities. For novice or expert, the intuitive interface and comprehensive features will help you save time and money delivering a successful project. Visualize and edit an abstracted view of your XML schema(XSD) using an intuitive user interface, and validate your XSD against the W3C standards.Includes split graphical and text views, intellisense, syntax highlighting, drag and drop, copy and paste, and multi-step undo/redo. Visualize and edit an abstracted view of your JSON schema using an intuitive user interface, and validate your JSON Schema against the IETF standards.

Today, XML is a widespread standard in multi-media and cross-platform publishing of technical documentation. Many editing programs, management systems and publication tools, as well as many industry standards, are now based on XML. Nevertheless, XML has not yet been able to break through in all areas, because the format has a very clear separation between the structure and the layout of documents. Editors still prefer to work with word processors such as Microsoft Word: here, the text and the document layout are created almost simultaneously and can be immediately checked on screen. Working with XML, on the other hand, requires a sense of the abstract – the text flow is broken up by tags of the document structure. The layout only follows at a further stage in production. SimQin shows the document in layout mode from the outset. Additionally, however, the XML document structure and organisation are made visible.

​EditRocket is a comprehensive text and source code editor, offering a suite of XML editing tools designed to enhance productivity and ease of use. Its XML Validator allows users to check the syntax of XML files and validate them against schemas when the "check schema" option is selected. The XML Tag Navigator parses the editor's content, displaying XML tags in a clickable list that directs users to the corresponding tag locations within the document. The XML Sidekick provides tabs for coding inserts, tools, utilities, and the XML Tag Navigator, enabling quick insertion of XML constructs via buttons or customizable keyboard shortcuts. Additionally, EditRocket features XML Tag Completion, automatically inserting closing tags after typing an opening tag, with a configurable completion delay. Beyond XML-specific functionalities, EditRocket supports syntax highlighting for over 20 programming languages, and offers coding sidekicks and code builders.

​Xmplify is a 64-bit native application providing a fully XML-aware editing environment. It offers intelligent editing aids and suggestions by analyzing XML content in real-time. It features an outline view that displays the document's structure and updates automatically with edits. For documents with a DTD or XML Schema, Xmplify performs automatic validation and offers auto-completion based on the document's definition, displaying relevant documentation for each suggestion. In the absence of a specified DTD or Schema, Xmplify can automatically derive one to facilitate accurate auto-completion. Additional features include quick navigation to element definitions, support for XSL transformations with built-in and external processors, live web previews for (X)HTML documents, and powerful search capabilities using XPath and regular expressions.

XmlPad is a professional editor for XML docs processing which allows presenting the data in tabular style. It includes a text editor with syntax highlighting, string numeration, collapsing and element autocompletion options. It is integrated with full-function table editor which considerably simplifies the documents processing at the tablet device. It maintains autoformatting and XML validation under the specified DTD, XSD, RelaxNG, and Schematron schemas while representing errors in the documents text at the same time. It allows to run XQuery queries and XSLT transforms. Built-in command console lets to run curl and base file commands. The table editor allows creating xml docs at several touches, it has a content panning function and is synchronized with document textual view.

Liquid XML Data Binder enables you to load XML Documents into a strongly typed object model within your C#, C++, Java, Visual Basic .Net or VB6 (COM) source code. Meaning fewer coding errors, reduced development and testing time, and an increase in schema conformance and coding reliability. Liquid XML Data Binder Features: - Generates an easy to use class library for C++, C#, Java, Visual Basic .Net, and VB 6 (COM) from an XML Schema. - Generated HTML documentation for your class library API. - Supports Smart Device platforms Android and iOS. - Supports W3C XML Schema (XSD), XDR and DTD standards. - Supports generating WCF Web Services from WSDL. - Supports JSON serialization. - Supports Fast Infoset binary XML serialization. - Support for the most complex XML standards. - Royalty free distribution of compiled code and runtime.