OmniDiskSweeper is described as «Mac OS X utility for quickly finding and deleting big, useless files and making space on your hard disks. OmniDiskSweeper scans your disks and highlights the biggest files, so you can determine what»s using up your disk space» and is an app in the os & utilities category. There are more than 25 alternatives to OmniDiskSweeper for a variety of platforms, including Windows, Mac, Linux, BSD and PortableApps.com. The best alternative is WinDirStat, which is both free and Open Source. Other great apps like OmniDiskSweeper are WizTree, TreeSize, Baobab Disk Usage Analyzer and DaisyDisk.OmniDiskSweeper alternatives are mainly Disk Usage Analyzers but may also be System Cleaners. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of OmniDiskSweeper.