Araxis Merge. The most popular program for comparing source code, which is simply indispensable for programmers in IT companies in working on a large project involving dozens / hundreds of developers: visually shows the difference in files and allows you to quickly and conveniently synchronize their contents. This way you can see what code has been added, removed, or modified. This allows multiple people to edit the same source code file and then synchronize it to save all the changes made by the developers.
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