A free software implementation of second-generation onion routing, a system enabling its users to communicate anonymously on the Internet.
http://www.torproject.org/
visit this site and download the version base on ur operating system.
It's free once your download this setup, you don't have to install it just need to extract it and start the exe. it's a portable application ,without no virus
Note:- This is educational purpose,I am not responsible for any harm,use it on your own responsibility.................
