It’s important to backup your files, but you may be inadvertantly storing and backing up multiple copies of files on your hard drive. You might forget that you have another copy of a video clip or MP3 file somewhere else on your hard drive, and duplicate folders of photos from Aunt Myrtle’s 75th birthday party (no offense to Aunt Myrtle!).

Big Bang Enterprises’ DoubleKiller will allow you to quickly identify and remove those duplicate files. The free version allows you to specify whether DoubleKiller scans for files based on file name, size and date. According to Big Bang, the pay version, DoubleKiller Pro runs at least 70 times faster, can be run from a command line, and offers advanced comparison options not available in the free version.

Takeaway: Disk space is inexpensive, but to help keep your video, photo and music collections organized, take a look at DoubleKiller as a free option to keep your files in order.