Tor is free software and an open network that helps you defend against traffic analysis, a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security.
For more information see the tor project page
tor-0.4.0.5 – updated 2019-05-11
tor 0.3.4.8 – updated 2018-09-20
tor – 0.3.2.10 – updated 2018-03-04