SequoiaView - SequoiaView is a featured rich application that comes with the visualization technique to provide you a single view of files and documents that are stored in your hard drive.
Xslimmer - Your Mac on a Diet With Xslimmer - Universal Application Slimmer for Mac OS X 10.3 and up.
DiskBoss - A file manager with a focus on storage side of things: Monitoring, classing, storage, duplicate...
iMobie MacClean - MacClean 3 is your all-in-one Mac app, allowing you to maintain OS performance, keep privacy safe, free up space on Mac, and best of all, keep away from any malicious threats.
DiskWave - DiskWave is a free utility to help you determine where most of your hard drive space is consumed.
ZEEEN - A beautiful iPhone app for browsing Dribbble