Altova DiffDog 2026 Professional Edition2026.02.00

Altova DiffDog 2026 Professional Edition lets you compare two versions of files or data, inspect their differences, and merge selected content so the versions agree. It works with text files, source code, XML, JSON, and Word documents, giving teams one place to review changes across ordinary and structured documents. Its XML-aware comparison treats XML as a defined data format, making it useful when meaningful document structure matters alongside textual differences.

You can compare and synchronize entire directories to identify mismatched files and bring folder contents into alignment. DiffDog also compares database schemas and database content, extending its use from individual documents to database development and data reconciliation. After reviewing comparison results, users can apply appropriate changes rather than replacing an entire file or dataset.

The software suits developers reconciling code, technical writers maintaining document versions, and database or data teams checking structured content across files and systems. It is published by Altova for Windows environments and is supplied as an x64 program. The current release is version 2026.02.00, and its capabilities cover file, directory, XML, JSON, Word, schema, and database-content comparison within the System Tools category.