4. CCleaner

Piriform's CCleaner is an excellent maintenance utility. It clears the contents of your Web browser's cache, history and temporary internet files. Plus, the program clears the Recycle Bin and registry. Simple, free and powerful, CCleaner is a great tool that should be in your maintenance toolkit if not part of your daily browsing habits.

http://www.piriform.com/ccleaner

ccleaner.jpg