CentralNotice From Wikipedia, the free encyclopedia This is the latest accepted revision , reviewed on 4 June 2015 . Jump to: navigation , search This article is about the software and network. For the organization, see The Tor Project, Inc Tor Developer(s) The Tor Project, Inc Initial release 20 September 2002 ( 2002-09-20 ) [ 1 ] Stable release 0.2.6.8 [ 2 ] (21 May 2015 ; 14 days ago ( 2015-05-21 ) ) [±] 0.2.5.12 [ 3 ] (7 April 2015 ; 58 days ago ( 2015-04-07 ) ) [±] 0.2.4.27 [ 3 ] (7 April 2015 ; 58 days ago ( 2015-04-07 ) ) [±] Preview release 0.2.7.1-alpha [ 4 ] (12 May 2015 ; 23 days ago ( 2015-05-12 ) ) [±] Development status Active Written in C [ 5 ] Operating system Microsoft Windows Unix-like ( Android , Linux , OS X ) Size 2–4 MB Type Onion routing , Anonymity License BSD Website www .torprojec...