One of the most popular alternatives to WizTree is WinDirStat, which is free and open source. Other popular alternatives are Baobab Disk Usage Analyzer, Filelight, TreeSize and SD Maid SE. Disk Usage Analyzers like WizTree are a crowded field, with more than 100 alternatives for Windows, Mac, Linux, Android and the web.
SpaceObServer is a powerful and flexible hard disk space manager for Windows. It scans local and network drives using a background service and stores their structure, sizes and properties in an SQL database. Linux and Unix filesystems can be scanned via SSH (Secure Shell).
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OmniDiskSweeper is a 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.
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This tool uses a sunburst chart to display the usage of your hard disk or other media. The chart shows all major files and folders from all directory levels at once.
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Folder Size analyzes your hard drives and displays file and folder sizes so that you can easily check the distribution of your disk space. The application will display the sizes of the folders and files and also the percentage of the total disk size that they occupy in a bar...
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Visual disk usage analyzer for Mac featuring byte-level duplicate file detection, detailed storage statistics, customizable folder scans, temporary file removal, undo safeguards, selective cleanup, support for large files, and dedicated modules for managing storage.
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A file manager with a focus on storage side of things: Monitoring, classing, storage, duplicate cleanup, archiving, and moving.
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DiskSavvy is a free, fast and easy-to-use disk space analyzer utility allowing one to analyze disk usage in one or more disks, directories, network shares and/or NAS storage devices.
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Duc is a collection of tools for inspecting and visualizing disk usage.
Duc scales quite well, it has been tested on systems with more than 500 million files and several petabytes of storage.
DiskSweep allows you to easily see which files and folders are taking up the most disk space and delete the unnecessary ones to free up space.
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