The best open source alternative to SpaceSniffer is WinDirStat. If that doesn't suit you, our users have ranked more than 50 alternatives to SpaceSniffer and 13 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to SpaceSniffer are Baobab Disk Usage Analyzer, Filelight, ncdu and DiskUsage.
Comprehensive disk analysis tool offering treemap visualizations to identify large files, duplicate detection, and versatile cleanup actions. Operates offline, ad-free, and open-source, it runs portably on Windows without registration, providing a lightweight solution to manage disk storage.
WinDirStat's visual style is just unreadable, i definitely prefer SpaceSniffer.
Powerful GNOME application that provides in-depth disk usage analysis with graphical representation. It supports scanning of volumes, specific directories, and network folders, offering insights into space allocation both locally and remotely.
rectangle visualisation is no where near as useful
Provides graphical disk usage analysis using interactive segmented rings, scans local, remote and removable disks, enables navigation and file management from within the interface, displays live info on hover, and integrates with KDE file managers for efficient data management.
SpaceSniffer is much faster, and also shows System Volume Information under Windows, which Filelight does not.
A disk usage analyzer with an ncurses interface, aimed to be run on a remote server where you don't have an entire graphical setup, but have to do with a simple SSH connection. ncdu aims to be fast, simple and easy to use, and should be able to run in any minimal POSIX-like...
DiskUsage provides a way to find out which files and directories on the SD card of your Android phone are consuming the most space. It displays diagram with directories/subdirectories proportional to their size. Users are allowed to zoom in to look at specific directory content.
GrandPerspective is a small utility application for Mac that graphically shows the disk usage within a file system. It can help you to manage your disk, as you can easily spot which files and folders take up the most space.
closest look, feel and functionality
SpaceRadar allows interactive visualization of disk space and memory. It currently supports Sunburst, Treemap, and Flamegraph charts.
TreePie : a simple way to display disk usage. It shows the distribution of size in a tree of directories by using an interactive multilevel pie (sunburst diagram). Really small and simple.
ferris-scan is a lightweight and fast both terminal user interface (TUI) and graphic user interface (GUI) alternative to WinDirStat. Built with Rust and ratatui, it scans your disk in parallel using a thread pool, allowing you to quickly navigate directories directly from the...
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Ditto, and SpaceSniffer is much faster.