TreeSize Free is a software that provides insights into the usage of disk space. It is accessible through the context menu of a folder or drive and displays the sizes of folders, subfolders, and files, along with NTFS compression rates.

One of the best things about TreeSize Free is that it is incredibly straightforward and easy to use. You can start the software from the context menu of any folder or drive, and it will immediately show you the size of the folder, including all of its subfolders. You can then expand the folder in an Explorer-like style and see the size of each individual subfolder. Additionally, all of the results can be drilled down to the file level, so that you can pinpoint exactly where all of your storage has gone.
Scanning is incredibly fast thanks to the thread-based system, which means you can see the results in real-time as TreeSize Free is working. This makes it incredibly convenient and easy to use. Furthermore, the Explorer context menu is supported within TreeSize, so you can use all of your usual drag and drop operations within the software.
One great feature of TreeSize Free is that it now includes the main feature of the discontinued freeware NTFSRatio. This means that TreeSize Free can not only display the size of your files, but it can also display the NTFS compression rate, giving you even more information about your storage.
Overall, TreeSize Free is an excellent piece of software that is incredibly useful for anyone who needs to manage their hard disk space. It is easy to use, fast, and incredibly efficient at displaying all of the information you need to know about your files and folders. If you're looking for a tool to help you keep your hard disk in check, then TreeSize Free is definitely worthy of consideration.
Version 4.4:
* NEW Dark Mode
* NEW languages added
* NEW option to allow drag&drop
* Several other changes and bugfixes.
* https://www.jam-software.com/treesize_free/changes.shtml