CCleaner Portable is a free tool designed to clean and optimize your computer. Remove junk and temporary files, free up hard drive space, erase online history, and more. The program also includes additional tools such as a registry cleaner, uninstaller, file finder, driver wiper, and startup manager.
Cleans the following:
Firefox: Internet Cache, Cookies, Internet history, Saved form information, more.
Chrome: Internet Cache and History, Download history, Last download location, more.
Internet Explorer: Temporary Internet files, history, cookies, index.dat files, recently typed URLs, more.
Opera: Cache, history, sessions, saved passwords, more.
Windows: Empty Recycle Bin, clipboard, temp files, memory dumps, shortcuts, windows log files, more.
Advanced cleaning: Windows event logs, old prefetch data, menu order cache, tray notifications cache, environment path, much more.
Windows Explorer: Recent docs, Run (in Start Menu), Other Explorer MRUs, thumbnail cache, taskbar jump lists, network passwords.