Filelight is a KDE graphical disk usage analyzer, part of the KDE Utils package. Developed by Max Howell
License: Open Source
JDiskReport is a Windows-only tool with a focus on detailed visual reporting of disk usage, while Filelight is a Linux-centric application that offers interactive visualizations and real-time monitoring. Filelight is more integrated with the KDE environment, making it ideal for Linux users, whereas JDiskReport provides a standalone solution for Windows users.