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CCleaner logo 2013.png
CCleaner screenshot.png
CCleaner 5.10 on Windows 7
Developer(s) Piriform
Initial release 23 September 2003; 12 years ago (2003-09-23)
Stable release
  • Windows: 5.10.5373[1] (24 September 2015; 8 days ago (2015-09-24)) [±]
  • Mac: 1.10.335[2] (23 September 2015; 9 days ago (2015-09-23)) [±]
  • Android 1.11.42[3][4] (22 June 2015; 3 months ago (2015-06-22)) [±]
Operating system Windows XP and later[5]
Mac OS X 10.5 and later[6]
Platform IA-32 and x64
Available in 47 languages[7]
Type Utility software
License Freemium

CCleaner (formerly Crap Cleaner), developed by Piriform, is a utility program used to clean potentially unwanted files (including temporary internet files, where malicious programs and code tend to reside) and invalid Windows Registry entries from a computer.[8]

A public version 1.09 for OS X has been released[6] along with a commercial Network Edition.


CCleaner can delete temporary or potentially unwanted files left by certain programs, including Internet Explorer, Firefox, Google Chrome, Opera, Safari, Windows Media Player, eMule, Google Toolbar, Netscape, Microsoft Office, Nero, Adobe Acrobat, McAfee, Adobe Flash Player, Sun Java, WinRAR, WinAce, WinZip and GIMP[9] along with browsing history, cookies, recycle bin, memory dumps, file fragments, log files, system caches, application data, autocomplete form history, and various other data.[10] The program also includes a registry cleaner to locate and correct problems in the Windows registry, such as missing references to shared DLLs, unused registration entries for file extensions, and missing references to application paths.[9] CCleaner v2.27 and later can wipe the MFT free space of a drive, or the entire drive.

CCleaner can uninstall programs or modify the list of programs that execute on startup.[11] CCleaner 2.19.901 and later can delete System Restore points.[12][13]

Critical reception[edit]

CNET editors gave the application a rating of 5/5 stars, calling it a 'must-have tool'. It was awarded Editor's Choice Award in April 2009 by CNET.[14] As of January 2014, it has been the most popular software on FileHippo for more than a year, and also has a 5-star editor's rating on Softpedia.[15]


  1. ^ "CCleaner v5.10". Official web site. Piriform. 2015-09-24. Retrieved 2015-09-24. 
  2. ^ "CCleaner for Mac v1.10". Official web site. Piriform. 2015-09-23. Retrieved 2015-09-24. 
  3. ^ "CCleaner for Android v1.11". Official web site. Piriform. 2015-06-23. Retrieved 2015-06-25. 
  4. ^ "CCleaner - Android Apps on Google Play". Google Play. 2015-06-22. Retrieved 2015-06-25. 
  5. ^ "What operating systems does CCleaner support?". CCleaner - FAQ. Piriform. Retrieved 5 November 2010. 
  6. ^ a b "CCleaner for Mac OS X". Retrieved 26 October 2011. 
  7. ^ "Changing the language CCleaner uses". CCleaner Documentation. Piriform Ltd. Retrieved 28 October 2011. 
  8. ^ "CCleaner - Optimization and Cleaning - Free Download". Retrieved 26 October 2011. 
  9. ^ a b "CCleaner - Features". Official web site. Piriform. Retrieved 3 June 2010. 
  10. ^ "Tuning Windows: Less Bull, More Speed". 20 May 2009. Retrieved 2 June 2009. 
  11. ^ "Screenshot #5: The Startup Tool". Official web site. Piriform. Retrieved 5 November 2010. 
  12. ^ "CCleaner Version History". Official web site. Piriform. 26 March 2013. Retrieved 26 March 2013. 
  13. ^ "Screenshot #6: The System Restore tool". Official web site. Piriform. Retrieved 5 November 2010. 
  14. ^ Rosenblatt, Seth (28 October 2010). "CCleaner". CBS Interactive. Retrieved 15 May 2011. 
  15. ^ Opris, Elena (7 January 2014). "CCleaner 4 Review". Retrieved 31 January 2014. 

External links[edit]