Windows and all the popular programs you install in your pc contain garbage files, temporary folders or store at the system registry information about the software use. For example : Windows stores every items typed at RUN in start menu or at FIND, plus stores installed ACTIVEX or JAVA components in DOWNLOADED FILES folder. 4Diskclean Pro offers a simple way to clean items in popular programs at one button click, with a search for predefined files, folders , and registry entries that only take space or keep information about your pc usage.