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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.

Tails is released under the GNU/GPL (version 3 or above).

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.

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.
  - 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.