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。Changes in CCleaner 3.05.1409 (04 Apr 2011):
- Added support for Internet Explorer 9.
- Added support for Firefox 4.0.
- Added Internet Explorer Cached Feeds cleaning.
- Added Internet Explorer Add-ons Statistics cleaning.
- Added iTunes cookie management.
- Added Opera cleaning for saved/opened directories paths.
- Improved Firefox/Mozilla Saved Password cleaning.
- Improved Intelligent cookie keeping functionality.
- Improved Registry cleaning for Obsolete Software.
- Improved Registry cleaning for Unused File Extensions.
- Added Registry cleaner for Windows Services.
- Added cleaning for obsolete Firewall Rules.
- Added detection of invalid Browser Helper Objects.
- Added new environment variables for user documents. (i.e. %CommonDocuments%, %CommonMusic%, %CommonPictures%, %CommonVideo%, %MyDocuments%, %Documents%, %MyMusic%, %Music%, %MyPictures%, %Pictures%, %MyVideo%, %Video%).
- Added cleaning for Adobe Air, Advanced Searchbar, Steam, Xfire, Skype, AOL Instant Messenger, Camfrog Video Chat, Miranda Instant Messenger, Pidgin, Yahoo Messenger, ooVoo, TeamSpeak, Ventrilo Client, Ventrilo Server, FrostWire, uTorrent, Shareaza, iMesh, BearShare, DC++ and Ares.
- Additional fix for Steam caching issues. (Build 1409)

下载:CCleaner 3.05.1409