CopyMergeForOSX is a small, simple, free, easy to use software that allows you to to copy a folder into a new folder and just merge the content.
You can select a target location and then drag all the files you want to copy into the app and it will tell you which files already exist and will be overwritten.
You can then deselect the ones you don`t want to be overwritten or you just go on and merge the folders, replacing the existing files in the target location with the copied ones.
Requirements:
· Adobe AIR
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