CCleaner is system optimization, privacy and cleaning tool. It 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. Additionally it contains a fully featured registry cleaner. But the best part is that it's fast (normally taking less than a second to run) and contains NO Spyware or Adware!
Cleans the following:

Temporary files, history, cookies, super cookies, Autocomplete form history, index.dat files.

Temporary files, history, cookies, super cookies, download history, form history.

Temporary files, history, cookies, super cookies, download history, form history.

Temporary files, history, cookies, super cookies, download history.

Temporary files, history, cookies, super cookies, form history.

K-Meleon, Rockmelt, Flock, Google Chrome Canary, Chromium, SeaMonkey, Chrome Plus, SRWare Iron, Pale Moon, Phoenix, Netscape Navigator, Avant and Maxthon.

Recycle Bin, Recent Documents, Temporary files, Log files, Clipboard, DNS Cache, Error Reporting, Memory Dumps, Jump Lists.

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...

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...

This software does NOT contain any Spyware, Adware or Viruses.
October 24, 2011

Release notes:
- Added Firefox 8.0 Beta support.
- Added Firefox 7.0 Final support.
- Added secure delete for Cluster tips.
- Added secure delete for Alternate Data Streams.
- Added cleaning for Network Passwords.
- Added PATH environment variable cleaning.
- Added cleaning for Top Sites in Safari.
- Improved support for Chrome Canary.
- Improved support for Firefox Aurora channel.
- Added cleaning for AVG AntiVirus 2012, ACDSee 14, BitZipper and Avast! Antivirus 6.
- Improved cleaning for VLC Media Player and Axialis IconWorkshop.
- Added Marathi translation.
- Minor bug fixes.