daisy disk represents your files in an easy-to-navigate & gorgeous interface. as you browse, files & folders are organized by size so you can quickly hone in on the files that are eating up the most hard drive space.

daisy disk is not a free app, but its test drive mode provides unlimited browsing capability to see what's going on with your storage & that alone is extremely useful. if you shell out the $10 for the paid version, you get a lot more features that could prove important for your workflow so definitely check out the full version if you like what the trial offers.