CCleaner is the number-one tool for cleaning your Windows PC. It 
protects your privacy online and makes your computer faster and more 
secure.
 CCleaner is easy to use and a small, fast download and user 
interface has the modern look. CCleaner is a freeware system 
optimization and privacy tool. Removes unused files from your system
 allowing Windows to run faster and freeing up valuable hard disk space.
 It also cleans traces of your online activities such as your Internet 
history. CCleaner can run from a USB thumbdrive and be installed/run on a
 computer without a complicated setup process. It is possible to specify
 files, folders and registry keys to ignore from the cleaning process. 
But the best part is that fast (normally taking less than a 
second to run) and contains NO Spyware or Adware! 
Cleans the following:
 
Internet Explorer. Temporary files, history, cookies, super cookies, Autocomplete form history, index.dat files.
Firefox. Temporary files, history, cookies, super cookies, download history, form history.
 
Google Chrome. Temporary files, history, cookies, super cookies, download history, form history.
 
Opera. Temporary files, history, cookies, super cookies, download history.
 
Apple Safari. Temporary files, history, cookies, super cookies, form history.
 
Other Supported Browsers. K-Meleon, Rockmelt, Flock, Google Chrome 
Canary, Chromium, SeaMonkey, Chrome Plus, SRWare Iron, Pale Moon, 
Phoenix, Netscape Navigator, Avant and Maxthon.
 
Windows. Recycle Bin, Recent Documents, Temporary files, Log files, 
Clipboard, DNS Cache, Error Reporting, Memory Dumps, Jump Lists.
 
Registry Cleaner. Advanced features to remove unused and old 
entries, including File Extensions, ActiveX Controls, ClassIDs, ProgIDs,
 Uninstallers, Shared DLLs, Fonts, Help Files, Application Paths, Icons,
 Invalid Shortcuts and more 
Third-party applications. Removes temp files and recent file lists 
(MRUs) from many apps including Windows Media Player, eMule, Google 
Toolbar, Microsoft Office, Nero, Adobe Acrobat, WinRAR, WinAce, WinZip 
and many more