---
title: Third Party Software Attributions
redirect_from: latest/reference/license
canonical_url: 'https://docs.projectcalico.org/v3.5/reference/license'
---


The following third party components are included with a complete
Project Calico distribution, and are made available by third parties
under separate license terms. Applicable license terms and information
regarding the authors and copyright holders are provided along with the
applicable source files and binary packages included in this
distribution.

The licenses under which these software components are distributed are
reproduced below for clarity.

## OpenStack

```bash
    Copyright (c) 2012 OpenStack Foundation.
    All Rights Reserved.

    Licensed under the Apache License, Version 2.0 (the "License"); you may
    not use this file except in compliance with the License. You may obtain
    a copy of the License at

         http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
    License for the specific language governing permissions and limitations
    under the License.
```
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## Dnsmasq

```
    dnsmasq is Copyright (c) 2000-2014 Simon Kelley
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; version 2 dated June, 1991, or
    (at your option) version 3 dated 29 June, 2007.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
```
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## BIRD

```
    BIRD Internet Routing Daemon

        (c) 1998--2008  Martin Mares <mj@ucw.cz>
                (c) 1998--2000  Pavel Machek <pavel@ucw.cz>
                (c) 1998--2008  Ondrej Filip <feela@network.cz>
                (c) 2009--2013  CZ.NIC z.s.p.o.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
```
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