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Altova DiffDog 2015 Professional Edition is the powerful diff / merge tool for files and folders. This easy-to-use synchronization utility quickly compares and merges text or source code files and diverse directories via its intuitive visual interface. It also provides advanced XML-aware differencing and editing capabilities based on those popularized in Altova XMLSpy. DiffDog is available in 32-bit and 64-bit versions.