When you visit a website, it can record your IP address, Internet service provider and details about your computer settings.

If you want to protect your privacy, you need an anonymizing service like Tor. It routes your Internet traffic through volunteer-run servers around the world to disguise your information.

Tor can help you anonymize web browsing and publishing, instant messaging, IRC, SSH, and other applications that use the TCP protocol.

Note: You will need to change your Web browser's settings. Therefore, this is recommended only for advanced computer users.

Cost: Free

Link: torproject.org