This is the portable version of CCleaner which does not require installation.

Third-party applications: Removes temp files and recent file lists (MRUs) from many apps including Media Player, eMule, Kazaa, Google Toolbar, Netscape, MS Office, Nero, Adobe Acrobat, WinRAR, WinAce, WinZip and many more… 100% Spyware FREE: This software does NOT contain any Spyware, Adware or Viruses. Registry cleaner: Advanced features to remove unused and old entries, including File Extensions, ActiveX Controls, ClassIDs, ProgIDs, Uninstallers, Shared DLLs, Fonts, Help Files, Application Paths, Icons, Invalid Shortcuts and more… also comes with a comprehensive backup feature. Windows: Recycle Bin, Recent Documents, Temporary files and Log files. Opera: Temporary files, URL history, cookies. Firefox: Temporary files, URL history, cookies, download history. But the best part is that it´s fast (normally taking less that a second to run) and FREE! Cleans the following: Internet Explorer: Temporary files, URL history, cookies, Autocomplete form history, index.dat. It also cleans traces of your online activities such as your Internet history. It removes unused files from your system – allowing Windows to run faster and freeing up valuable hard disk space. CCleaner PRO v + Serial OS: Windows XP/2003/Vista/7 (32-Bit/64/Bit) CCleaner Portable is a freeware system optimization and privacy tool.

Ccleaner portable