One software license is required per user.
License is perpetual (does not expire) and includes free minor updates and extended email support.

Standard License - Single User, perpetual license. Valid for commercial use.
XML Validator Buddy makes it easy to edit, create and validate any number of XML and JSON documents.

• Easy to use desktop application. Working with XML for everyone.
• XML and JSON editor.
• Extensive Batch validation support.
• Supports W3C Schema, DTD, Schematron and RelaxNG.
• Generate clear and comprehensive HTML documentation for your W3C Schemas.
• Quick and easy XSL transformation.
• Convert CSV to XML or JSON.

Plus License - Single User, perpetual license. Valid for commercial use.
Everything in Standard plus:

• Sign and verify multiple XML documents with digital signatures.
• Command-line tool to verify and sign XML documents.
• Support for SHA-2 hash algorithms (SHA-256, SHA-384, SHA-512).
• Process, check and edit even large XML.
• Edit large text files of any format.

Personal License - Single User, perpetual license. NOT valid for commercial use.

• Desktop Application and Command-line tool.