Filelight is a KDE graphical disk usage analyzer, part of the KDE Utils package. Developed by Max Howell
License: Open Source
SpaceSniffer is a Windows-based tool that provides a fast and intuitive treemap visualization of disk usage, while Filelight, primarily for Linux, offers a visually appealing radial view of disk usage. Both tools have unique features tailored to their respective operating systems, making them suitable for different user preferences.