CCleaner (Crap Cleaner) is a freeware system optimisation tool.CCleaner removes unused and temporary files from your system - allowing it to run faster, more efficiently and giving you more HDD space.The best part is that it's fast (normally taking less that a second to run) and Free.

24 February 2006: CCleaner is now available without the Yahoo! Toolbar, so we have restored the award and uploaded on our servers the version without extra languages.We strive to offer our users only the latest software versions, therefore we will initially provide the adware version of Cleaner, as soon as it is released. We will update the listing leaving only the ad-free version when that will be released.

Features of "CCleaner":
Cleans the following Windows components:
Internet Explorer
· Temporary File Cache
· URL History
· Cookies
· Hidden Index.dat files
· Last download file location

Firefox
· Temporary File Cache
· URL History
· Cookies
· Download manager
· Recycle Bin
· Clipboard
· Windows Temporary files
· Windows Log files
· Recent Documents (on the Start Menu)
· Run history (on the Start Menu)
· Windows XP Search Assistant history
· Windows XP old Prefetch data
· Windows memory dumps after crashes
· Chkdsk file fragments
Advanced Options allow cleaning of:
· Menu Order cache
· Tray Notifications Cache
· Window Size and Location Cache
· User Assist history
· IIS Log Files
· Custom Folders
· Application Cleaning:
As well as cleaning up old files and settings left by standard Windows components, CCleaner also cleans temporary files and recent file lists for many applications. Including: Firefox, Opera, Safari, Media Player, eMule, Kazaa, Google Toolbar, Netscape, Microsoft Office, Nero, Adobe Acrobat Reader, WinRAR, WinAce, WinZip and more...
· Registry Cleaning:
CCleaner uses an advanced Registry Cleaner to check for problems and inconsistencies. It can check the following:
· File Extensions
· ActiveX Controls
· ClassIDs
· ProgIDs
· Uninstallers
· Shared DLLs
· Fonts
· Help File references
· Application Paths
· Icons
· Invalid Shortcuts and more...
· Safety:
CCleaner was designed from the ground to be safe and secure to use. It has multiple levels of checks in place to ensure that it cannot delete any useful information or documents you may still need. We also certify that it contains no Spyware or Adware.
· High Security:
For the super cautious users we also offer secure file erasing. By overwriting the files before deleting them, making it impossible to recover the data.· Multiple Languages:
Thanks to the translators, CCleaner is available in 35 different languages: English, Albanian, Arabic, Bosnian, Bulgarian, Catalan, Chinese (Simplified), Chinese (Traditional), Czech/Slovak, Danish, Dutch, Finnish, French, Galician, German, Greek, Hebrew, Hungarian, Italian, Japanese, Korean, Lithuanian, Macedonian, Norwegian, Polish, Portuguese, Portuguese (Brazilian), Romanian, Russian, Serbian Cyrillic, Serbian Latin, Slovak, Spanish, Swedish and Turkish.

What's New :
We've made even more improvements which are listed below in the full change log:
CCleaner v2.20.920

* Added support for Google Chrome recently closed tabs.
* Disabled removal of most recent System restore point.
* Fixed bug with Internet Explorer 8 Compatibility View settings.
* Improved uninstaller support for Windows 7.
* Enhanced right-click menu options for Cleaner screen tree.
* Added extra information under title for Options and Tools screens.
* Added right-click menu to Registry screen tree.
* Added support to multi-select items in Include, Exclude and System Restore screens.
* Added language support for Estonian and Farsi.
* Internal 64-bit improvements.
* Minor bug fixes.