Folder Size Shell Extension is a very simple application that adds a new tab to the “Properties” screen of any folder, allowing you to see its size on the go.

In essence a shell extension, this little utility comes with no dedicated interface beside the information you can access via the “Properties” menu, which is actually a list of the folder contents along with the respective size.

Of course, there's nothing too difficult, so it's enough to install the application and you should be ready to go. In some cases, a computer reboot is necessary, so if you can't see the “Size” tab a restart may fix the problem.

Besides showing folders sizes, Folder Size Shell Extension also comes with a few options, including “Units”, “Reorganize” and “Display”, letting you to customize the tool a little bit.

There's no help file whatsoever, so those of you who may have problems working with the app have no other option than to try search for an answer on Google.

Folder Size Shell Extension is designed for older Windows versions, which means there are zero chances to make it work on Vista or 7. It works like a charm on 2000 and XP, but 64-bit versions are not supported at all.

Obviously, it's absolutely no surprise that Folder Size Shell Extension runs on very low computer resources, and your system may not even notice that you're running it, since it's all integrated into the operating system.

Folder Size Shell Extension is undoubtedly a handy utility and some users can't simply live without it, but support for a wider array of operating systems is a must.