JDiskReport enables you to understand how much space the files and directories consume on your disk drives, and it helps you find obsolete files and folders. Developed by JGoodies
License: Free
FolderSizes is a comprehensive, feature-rich application designed for detailed disk usage analysis, while JDiskReport is a free, simpler tool that provides basic disk usage insights. FolderSizes is better suited for professionals needing in-depth analysis, whereas JDiskReport is ideal for casual users looking for quick, visual insights.