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[[!meta title="License and source code distribution"]]

Tails is [Free Software](https://www.gnu.org/philosophy/free-sw.html): you can download, use, and
share it with no restrictions.

The Tails source code is released under the GNU/GPL (version 3 or
above) and is Copyright (C) Tails developers <tails@boum.org>.
Any exception to this rule is documented either below or in the
affected source file.

However, Tails includes non-free firmware in order to work on as much hardware as
possible.

Source code
===========

Most of the software included in Tails is taken directly from upstream
Debian packages and is neither modified nor recompiled by Tails.

- The source code of software that is specific to Tails is available in
  [[our Git repositories|contribute/git]].

- The source code of the Debian packages included in Tails is available
  in the [APT snapshot](http://tagged.snapshots.deb.tails.boum.org/)
  that we created for that version of Tails.

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- The [[!tails_gitweb
  config/chroot_local-includes/usr/share/tails/chroot-browsers/unsafe-browser/extensions/red-2.0-an+fx.xpi
  desc="red theme"]] used by Tails' _Unsafe Browser_ was downloaded
  from Mozilla add-ons website
  (<https://addons.mozilla.org/en-US/firefox/addon/simplyred/>):
  - license: Creative Commons Attribution 3.0
  - author: [Firefox user 14030863](https://addons.mozilla.org/en-US/firefox/user/14030863/)

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Website
=======

This website uses several images with distinct copyright, licenses, trademarks
and distribution terms:

- The Tails logo is based on [[USB|http://thenounproject.com/term/usb/23873/]]
  by Ilsur Aptukov from the Noun Project.

- Debian logo: Copyright (c) 1999 Software in the Public Interest.

- Onion logo: registered trademark of The Tor Project, Inc.; the Tails
  project is authorized to use it under certain conditions; licensed under
  Creative Commons Attribution 3.0 United States License.

- All the [[drawings of our personas|contribute/personas]] are licensed under
  the <a href="https://creativecommons.org/licenses/by-sa/4.0/">Creative Commons
  Attribution-ShareAlike 4.0 International License</a>, copyright Thomas
  Verguet.

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- The [[boot menu animation|install/win/usb#animation]] is licensed
  under the <a href="https://creativecommons.org/licenses/by-sa/4.0/">Creative Commons
  Attribution-ShareAlike 4.0 International License</a>, copyright [Odile
  Carabantes](https://studiomoare.com/) and [Enso
  Studio](https://www.ensostudio.tv/).

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- Icons from [[The Noun Project|http://thenounproject.com/]]:

  - [[Announcement|http://thenounproject.com/term/announcement/1186/]]:
    Creative Commons - Attribution, by Olivier Guin.

  - [[Code|http://thenounproject.com/term/code/18033/]]:
    Creative Commons — Attribution, by Azis.

  - [[Pen|http://thenounproject.com/term/pen/18907/]]:
    Creative Commons — Attribution, by factor[e] design initiative.

  - [[Loan|http://thenounproject.com/term/loan/19538/]]:
    Public Domain, by Rohith M S.

  - [[User|http://thenounproject.com/term/user/419/]]:
    Creative Commons — Attribution, by Edward Boatman.

  - [[Translation|http://thenounproject.com/term/translation/5735/]]:
    Creative Commons — Attribution, by Joe Mortell.

  - [[Gears|http://thenounproject.com/term/gears/8949/]]:
    Creative Commons — Attribution, by Cris Dobbins.

  - [[Graphic Design|http://thenounproject.com/term/graphic_design/9198/]]:
    Creative Commons — Attribution, by Cornelius Danger.

  - [[Check Mark|https://thenounproject.com/term/check/4489/]]:
    Public Domain, by Julian Norton.

  - [[Delete|https://thenounproject.com/term/delete/49691/]]:
    Creative Commons — Attribution, by Kervin Markle.

  - [[Play|https://thenounproject.com/term/play/152052]]:
    Creative Commons — Attribution, by Zech Nelson.

  - [[Pause|https://thenounproject.com/term/pause/152046]]:
    Creative Commons — Attribution, by Zech Nelson.

  - [[USB|https://thenounproject.com/term/usb/28901]]:
    Creative Commons — Attribution, by Wilson Joseph.

  - [[Time|https://thenounproject.com/term/time/6732]]:
    Creative Commons — Attribution, by Richard de Vos.

  - [[Printer|https://thenounproject.com/term/printer/146674]]:
    Creative Commons — Attribution, by Diego Naive.

  - [[Smart Phones|https://thenounproject.com/term/smartphone/25790]]:
    Creative Commons — Attribution, by Pham Thi Dieu Linh.

  - [[Laptop|https://thenounproject.com/term/laptop/6729]]:
    Public Domain, by Jean Yashu.

  - [[Love|https://thenounproject.com/term/love/218846/]]:
    Creative Commons — Attribution, by Thomas Helbig.

  - [[Survey|https://thenounproject.com/term/survey/1296072]]:
    Creative Commons — Attribution, by unlimicon.

  - [[Info|https://thenounproject.com/term/info/808461]]:
    Creative Commons — Attribution, by icongeek.