iClean for Mac

From Allume Systems:

You may not realize it, but every time you visit websites, you collect identification cookies that show where you've been on the web. Some cookies help you easily re-enter sites you frequent, while others needlessly risk your privacy and take up disk space. Cookie data is often gathered and sold to companies who want to target you for spam and annoying pop-up ads. Protect your privacy. Don't be a target! Use iCleanÒ¯�¿�½ after every web session to wipe away unwanted Internet tracks.