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。
v4.11.4619 (25 Feb 2014)
- Added Opera 15 and newer Startup item management.
- Added File content duplicate detection to File Finder.
- Improved Drive Wiper SSD detection.
- Added Torch Browser support.
- Added File Finder upper file size threshold.
- Optimized Firefox Profile Startup items detection.
- Improved Scheduler language support (Professional only).
- Improved Google Earth, Winamp, MusicMatch Jukebox, Windows Live Messenger, Free Download Manager and Internet Download Accelerator cleaning.
- Minor GUI Improvements.
- Minor bug fixes.
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