DiffnMerge is a Development::Specialized Tools software developed by Drasbek Data/Tom Drasbek Kjaer. After our trial and test, the software was found to be official, secure and free. Here is the official description for DiffnMerge: Quick and Easy File and Folder Comparing.
Compare and merge text files. Explore the differences between folders and files.
Compare two text files and see the differences in the two files side by side, then merge the text files manually or automatically by inserting the changes as programming language comments (C/C++/Java, Visual Basic, XML/HTML, Delphi, Plain). Recursively compare trees of folders and files to find the differences both in file presence and file contents.
Compare two HTML documents side by side using the Microsoft Internet Explorer document hierarchy.
you can download DiffnMerge free now.