CCleaner是一款免费的系统优化和隐私保护工具。CCleaner的主要用来清除Windows系统不再使用的 垃圾文件，以腾出更多硬盘空间。它的 另一大功能是清除使用者的上网记录.CCleaner的体积小，运行速度极快，可以对临时文件夹、历史记录、回收站等进行垃圾清理，并可对注册表进行垃圾 项扫描、清理。附带软件卸载功能。
CCleaner 4.04.4197:
- Added Windows 8.1 Preview support.
- Added Internet Explorer 11 cleaning.
- Added Opera 15 cleaning.
- Improved Google Chrome cleaning: Flash Cookies, Channel ID Cookies and Last Download Location.
- Improved detection of Chromium based browsers.
- Added Comodo IceDragon cleaning.
- Improved detection and cleaning of portable browsers.
- Improved Monitoring notifications (Pro version).
- Added cleaning for Sony Vegas Pro 12.0, Bing Search, Bing Finance, Bing Maps, Bing News, Bing Sports and Bing Travel.
- Added Hindi translation.
- Minor GUI improvements and bug fixes.
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