JDiskReport is a disk analysis utility, that allows you to view disk space usage with the help of graphical, interactive pie charts. It allows you to quickly find the largest, oldest or newest files and gather statistics about file sizes and types for each drive. You can choose between different graphical charts or text reports.

JDiskReport Features:
1. Size Perspective
The size perspective shows you how much space the files and folders consume on your disk drives. The size pie chart is probably the best to find monster files and folders. You can switch to the table view and toggle the display of files to get more detailed information about a folder.
2. Size Distribution
The size distribution views help you to learn more about the different file sizes that exists on your hard disks. Look at these views to check whether the size distribution is what you expected it to be.
If you are in Show file size mode, you can see how much space is consumed by large, medium sized, and small files. In Show number of files mode, you see how many files are large, of medium size, and small.
3. Modified Distribution
The modification distribution views provide you with information about when how much space and how many files have been modified.
4. Type Distribution
The type distribution statistics are collected from the file extensions that exist on the analysed file tree. You can see which file type consumes space and how many files of a given file type you have.
5. Top 100 Lists
These tables show the list of 100 largest files, least recently modified files, and most recently files. This is a good place to find large and obsolete files.

The license of this software is Freeware, you can free download and free use this disk management software.