Altova DiffDog

What Altova DiffDog is

Altova DiffDog is a Windows desktop tool for comparing and merging files, directories, and database schemas or content. It handles text and source code, XML and JSON, Word documents, folders, and databases. Users can merge differences in either direction, edit compared files directly, and undo or redo without a stated limit. XML comparison includes options for entity resolution, attribute-order handling, well-formedness checks, validation, and schema-based editing help. Directories can be compared and synchronized, including ZIP archives and OOXML files; difference reports can be exported as text, XML, or HTML. Enterprise Edition adds three-way file comparison and merging, plus database schema and table-content comparisons and SQL change-script generation. DiffDog Server can automate high-volume comparisons and reports for files, directories, and URLs. Professional Edition costs $189, paid once, while Enterprise Edition costs $269, paid once. A 30-day trial is available after requesting an evaluation license, which is sent by email. Comparing Word documents requires Microsoft Word 2003 or later installed.