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This service uses a Free microblogging tool called **GNU social**.
GNU social is available under the [GNU Affero General Public License
Version 3.0](http://www.fsf.org/licensing/licenses/agpl-3.0.html), a
Free Software license for network services.

You can get a copy of the software by following links from the
[GNU social main site](http://gnu.io/)¹. The version of the software
that runs on *this* site is unmodified from that version. The site
also depends on certain libraries and other software; these are all
bundled in the [GNU social repository](https://gitorious.org/social/mainline)²
and release archive files.

References
----------
1. GNU social main site, <http://gnu.io>
2. GNU social repository, <https://gitorious.org/social/mainline>
