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 5.36.6278 (October 24, 2017):

Browser Cleaning

Firefox: updated Session cleaning rule to support changes in Firefox 56.0

Chrome (and Chromium): updated Internet History cleaning rule to clean user activity data

Opera: updated Internet History cleaning rule to clean user activity data

Default Cleaning Rules

Windows Explorer: Most Recently Used documents and other MRU files no longer cleaned by default

Windows Defender: Scan history no longer cleaned by default

Microsoft Office: MRUs no longer cleaned by default

Edge, Chrome/Chromium, Firefox, Opera, Safari, Thunderbird: Current session data no longer cleaned by default

Emergency Updater

Added new executable: “CCUpdate.exe”

Added new Windows Scheduled Task: “CCleaner Update”

下载地址:

http://download.piriform.com/ccsetup536.exe