CCleaner (formerly Crap Cleaner) is a freeware system optimization and privacy tool. It removes unused and temporary files from your system - allowing Windows to run faster, more efficiently and giving you more hard disk space. The best part is that it’s fast! (normally taking less than a second to run) and Free.
Cleans the following:
[li]Internet Explorer Cache, History, Cookies, Index.dat.[/li][li]Recycle Bin, Temporary files and Log files.[/li][li]Recently opened URLs and files.[/li][li]Third-party application temp files and recent file lists (MRUs). [/li]Including: Firefox, Opera, Media Player, eMule, Kazaa, Google Toolbar, Netscape, Office XP, Nero, Adobe Acrobat, WinRAR, WinAce, WinZip and more…
[li]Advanced Registry scanner and cleaner to remove unused and old entries. [/li]Including File Extensions, ActiveX Controls, ClassIDs, ProgIDs, Uninstallers, Shared DLLs, Fonts, Help Files, Application Paths, Icons, Invalid Shortcuts and more… Backup for registry clean.
[li]Windows Startup tool.[/li][/ul]If you like and use this software then it is polite to make a donation to the author.