Operating system will produce a lot of junk files and use trace files after a long time of use, thus affecting the running speed of system and making it be prone to expose user privacy, so it is necessary to timely clean them up. In the field of system garbage cleaning, you may first think of the celebrated CCleaner, but in fact there is another system garbage cleaning edge tool that is not inferior in any respect - Wise Disk Cleaner. It's an entirely free alternative for CCleaner, developed by WiseCleaner (智慧清理) from China.