Clean System Directory

Clean System Directory is a tiny and portable software application designed to automatically find and remove unused DLL files from your computer.
It doesn't come packed with complex features or customization preferences, so it can be handled by first-time and more experienced users alike.

Zero-install application

You can drop the program files in a custom location on the HDD or even on a USB flash drive, and simply click the executable to launch Clean System Directory on any computer to search for unnecessary DLLs. An important aspect worth noting is that, unlike most installers, this app doesn't create extra files on the disk or entries in the Windows registry, thus leaving no traces behind after its removal.

Outdated interface and options

The GUI is user-friendly, made from a single window that provides direct access to all available options. By judging the look of the interface, it's obvious that Clean System Directory hasn't been updated for a long time. However, it's easy to navigate.

Scan and delete unused DLLs

All you have to do is select one or more drives to scan, wait for the task to finish, and ask the program to quickly get rid of the unused DLLs.
It shows the full path of each item during the scanner but it doesn't let you study the files in detail to help you decide whether or not you want to eliminate them. Apart from the fact that you can restore the DLLs to their original location on the disk, there are no other noteworthy options available here.

Evaluation and conclusion

The utility worked well in our tests, without hanging, crashing or prompting error messages. It carried out scan jobs in reasonable time while remaining light on system resources consumption.
On the other hand, it hasn't been updated for a long time and doesn't work on 64-bit Windows. On top of that, Clean System Directory comes bundled with limited features that don't satisfy the preferences of advanced users looking for customization options, such as the ability to examine each DLL up for deletion.