SpaceSniffer for Mac

DaisyDisk is a utility that helps you identify and delete large files from your Mac. It might prove to be of good use if you need to quickly reclaim disk space on your drive.

This program is a disk usage utility developed for Mac users who wish to know exactly where all of their disk space has gone. The application helps you immediately identify the folders and files that occupy large chunks of space from your drives.

GrandPerspective is an open source solution for analyzing disk space usage on your Mac. With its help, you can locate the files and folders that take up the most space on your local drives or external storage devices.

WhatSize is shareware tool that allows the user to quickly measure the size in bytes of a given folder and all subfolders and files within it. You would be surprised at how many useless files might be laying around on your hard disks.

JDiskReport is a simple app that shows you where your hard drive space has gone. I have recently ran out of space on my Mac for the first time ever.

Space Gremlin is a nice application that allows you to know how much occupied space you have on your computer and easily trash those files and folders that you don't use anymore.

Disk Map makes it easy to visualize the files and folders that are cluttering up your storage drives. It enables you to quickly locate, delete or compress large files and folders on your hard drive and reclaim valuable space.