tor

Tor protects your privacy on the internet by hiding the connection
between your Internet address and the services you use. We believe Tor
is reasonably secure, but please ensure you read the instructions and
configure it properly.

To build Tor from source:
./configure && make && make install

Home page:
https://www.torproject.org/

Download new versions:
https://www.torproject.org/download.html

Documentation, including links to installation and setup instructions:
https://www.torproject.org/documentation.html

Making applications work with Tor:
https://wiki.torproject.org/noreply/TheOnionRouter/TorifyHOWTO

Frequently Asked Questions:
https://www.torproject.org/faq.html
https://wiki.torproject.org/noreply/TheOnionRouter/TorFAQ