Portable TreeSize Free
TreeSize is an application that displays the files and folders which take up the most disk space on your hard drive.
Since this is a portable product, installation is not required. So, you can place TreeSize on an external device and run it on any computer.
What is more important is the fact that your Windows registry keys will not be changed.
The interface of the program is plain and simple. You can select a directory or volume and initiate the scanning process.
Folders will be immediately displayed in a descending order, according to their size.
If you hover your mouse, you can check out their CD/DVD size, permissions, size, total folders, attributes, owner, last date of modification, and more.
Additionally, you can refresh the list, create a new instance, as well as switch to a different viewing mode (e.g. size, allocated space, parent, file count, compression rate).
Moreover, you can expand folders (from level 1 through 6 or full expand), select a color for the size indicator in the background of the folders, set a file filter, scan with one thread only, and more.
The application uses a moderate amount of system resources and didn't freeze, crash or pop up errors during our tests. Since it is extremely easy to use by beginners, we strongly recommend Portable TreeSize to all users.