Apps similar to FolderSizes include WinDirStat, which is free and open source. Other options are WizTree, Baobab Disk Usage Analyzer, SD Maid SE and Filelight. Disk Usage Analyzers like FolderSizes are a crowded field, with more than 50 alternatives for Windows, Mac, Linux, Android and the web.
Native macOS disk analyzer that scans folders and space, presenting file-type treemaps or ring charts beside a Finder-style outline. It can reveal items, send them to Trash after confirmation, flag caches and build output, and offer an optional read-only JSON CLI.
Canada
SpaceBrowser scans a folder or volume and displays its contents as a size-proportional treemap, making large files and directories easy to identify.
France
EU
Indonesia
A native Windows application for quickly analyzing disk usage and finding the files and folders that consume the most space.
MacDirStat is a free, open-source disk space analyzer for macOS, inspired by WinDirStat. It scans a drive or folder and draws every file as a color-coded rectangle sized by its disk usage, so the biggest files and folders stand out at a glance.
United States
StorageRadar maps your disk, shows blocked paths instead of hiding them, lets you dry-run cleanup, and compares what changed over time. Scan data stays local, while analytics and diagnostics remain separately controllable in settings.
Thailand
O&O DiskStat is a high-power tool for analyzing the used disk space on your storage volumes. With an easy-to-use interface based on the design of the Windows Explorer, you can take a closer look at the file and folder structure of your internal and external drives.
GermanyEU
Disk Recon is a disk space utility that reveals all the crucial information that you need to find out where all your disk space has gone and how you can recover it.
NetherlandsEU
Help you to view at a glance all the folders, files inside them and the space occupied by them on your system
China
