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Does GroupDocs.Comparison require online usage?

Is GroupDocs.Comparison an on-line tool?

@liuzhuotao

GroupDocs.Comparison is a UI-Agnostic API that could be integrated in any .NET or Java application without any third party tool or software dependency.
Moreover, GroupDocs.Comparison Cloud API Includes SDKs for Python, PHP, Node.js and many other technologies.
Lastly, we have free web/online applications as well.