NTI Shadow for Mac

From NTI:

NTI Shadow 4 continues on the award-winning easy-to-use backup application that automatically protects your photo, music, video, and various data files. It makes data restoring as easy as dragging and dropping files from one place to another. Real-time and continuous data backup plus you can set Shadow 4 to save versions of your files/folders every time they change. You can also specify your backup schedule by the minute, hour, day, week and start time(s) and choose a specific or even a customized file type with Shadow 4 advanced file filtering. Shadow 4 delivers the ability to automatically copy files from multiple Macs to various devices in real time and also preserves the files in their native format - meaning no additional software is necessary to restore files. Shadow 4 works transparently in the background silently keeping your files protected. Shadow 4 enables automatic, continuous sharing and backup of photo, music, data, and video files to virtually any attached storage device and computers on your network with a drive letter.

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