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 5.10.5373:
- Improved Microsoft Edge Cookie management.
- Optimized internal architecture for faster start up.
- Added Chrome extension cache and cookie cleaning.
- Improved Firefox session cleaning.
- Added Firefox HSTS (HTTP Strict Transport Security) cookie cleaning.
- Improved Intelligent Cookie Scan.
- Improved Window resizing and DPI support.
- Added Corsican translation.
- Minor GUI Improvements.
- Minor bug fixes.