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 4.14.4707:
- Improved Firefox and Mozilla based browser Cookie cleaning.
- Improved Startup item Unicode support.
- Improved Operating System detection.
- Added Cyberfox browser cleaning.
- Improved 64-bit Registry detection and cleaning architecture.
- Improved skip UAC warning for Monitoring (CCleaner Professional only).
- Added PowerArchiver 2013, Nitro Pro 9 and Stardock WindowBlinds cleaning.
- Improved Microsoft Office 2010, Foxit Reader 6, AVG AntiVirus 8, 9, 10, 2012 and 2013 cleaning.
- Minor GUI Improvements.
- Minor bug fixes.
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