CCleaner is a utility for cleaning garbage in the operating system. In the course of its work, CCleaner (Crap Cleaner) searches for and removes temporary and unused files. This includes: cookies, the history of visiting sites in IE, temporary Internet files, search strings, Recycle Bin files, etc. The search for temporary files of third-party applications is also supported: Firefox, Opera, Media Player, eMule, Kazaa, Google Toolbar, Netscape, Office XP, Nero, Alcohol 120, Adobe Acrobat, WinRAR, WinAce, WinZip, GetRight, Morpheus, Download Accelerator Plus, VirtualDub , ZoneAlarm and many others. You can also clean up the Windows registry by saving it unnecessary extensions, old dll libraries and incorrect paths that accumulate in a considerable amount, especially after installing and uninstalling a variety of programs. Having done all these operations on your system, you not only free up space on the disk, but also increase the performance of the system as a whole.

In addition to the standard CCleaner configuration, there is a Slim product assembly, the difference is that in it:
There is no built-in binding to the distribution in the form of the toolbar Google Toolbar (without toolbar)
CCleaner (x86 / 32-bit) and (x64 / 64-bit) versions in one installer