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Anonymous Internet communication system

Tor is anonymous network router to improve privacy on the Internet.

Tor protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody watching your Internet connection from learning what sites you visit, and it prevents the sites you visit from learning your physical location. Tor works with many of your existing applications, including web browsers, instant messaging clients, remote login, and other applications based on the TCP protocol.

Tor can't solve all anonymity problems. It focuses only on protecting the transport of data. Please check the available documentation before using Tor.


"IRC [] " IRC general channel
"IRC [] " IRC development channel


Download version (stable)
released on 23 January 2017



VCS Checkout


Related Projects

Extensions, plug-ins, or add-ons for this program

TorChatIM with strong anonymity
This package is listed in the following Collections:


LicenseVerified byVerified onNotes
BSD 3Clausegenium23 December 2013
Tor, a free software project to provide anonymity on the Internet.
BSD 3Clausegenium23 December 2013
BSD 3Clausegenium23 December 2013
src/ext/strlcat.c and src/ext/strlcpy.c
ODblgenium23 December 2013

Leaders and contributors

Steven Hazel Contributor
Roger Dingledine Maintainer
Christian Grothoff Contributor
Jason Holt Contributor
John Bashinski Contributor
Matej Pfajfar Contributor

Resources and communication

AudienceResource typeURI
DevelopersMailing List
GeneralMailing List
DevelopersVCS Repository Webview

Software prerequisites

Required to buildOpenSSL

This entry (in part or in whole) was last reviewed on 26 January 2017.


"ODbl" is not in the list (ACEL, AGPLv1orlater, AGPLv3, AGPLv3_with_exception, AGPLv3orlater, AGPLv3orlater_with_exception, ATK License, Academic Free License 3.0, Affero General Public License, Apache, ...) of allowed values for the "License" property.

"Developers" is not in the list (General, Help, Bug Tracking, Support, Developer) of allowed values for the "Resource audience" property.

"Developers" is not in the list (General, Help, Bug Tracking, Support, Developer) of allowed values for the "Resource audience" property.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.