Ccleaner is a free program developed by Piriform, which is used to clean the drive from residues created by other applications such as Firefox, Safari, Opera, Internet Explorer and others. Thanks to its capabilities, it is perceived as one of the best applications of this type. The program can delete unnecessary data from the disk, as well as from the registry. It can also be used to uninstall other applications. The program allows you to clear the remains of your Internet browsing, e.g. a list of pages that you have visited or downloaded files, as well as cookies and temporary files.