“With DaisyDisk you can free up disk space by quickly finding and deleting big, useless files. The program scans any mounted disk and displays it on the sunburst map, where segments mean files and folders, proportionally to their sizes. The map is easy to read and navigate. You can also quickly preview any file and reveal it in Finder to delete.”
To read more about DaisyDisk, head here: http://www.daisydiskapp.com/
To get DaisyDisk for $10 (normally $20), read this post from the developer with instructions on how to get the discount.
OFFER EXPIRES JULY 10th