DeltaXML Core is the definitive tool for developers working with XML applications who need to control changes in documents and data, whether in database or text format. There are other products which can provide simple differencing of documents, but none which can provide the complex combined capability of both differencing and processing of those changes. DeltaXML is also the only product that scales with your needs - processing hundreds of megabytes in a single file is no problem for DeltaXML Core.
DeltaXML Core generates a delta file which is 100% XML and has the same look and feel as the input documents. This makes the delta file easy to understand and to process, avoiding the need to work with more than one file or with complicated Xpath expressions. Critically, DeltaXML Core provides you with the ability to display changes in the context of the original document (known as Full Context Delta) or just the delta information on its own.
For further information follow these links: DeltaXML Core, Licensing and Pricing, DeltaXML home page.