Tor is free software and an open network that helps you defend against a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security known as traffic analysis.
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://wiki.torproject.org/noreply/TheOnionRouter/TorFAQ