..
   ****************************************************************************
    pgRouting Manual
    Copyright(c) pgRouting Contributors

    This documentation is licensed under a Creative Commons Attribution-Share
    Alike 3.0 License: http://creativecommons.org/licenses/by-sa/3.0/
   ****************************************************************************

.. _introduction:

Introduction
===============================================================================

pgRouting is an extension of `PostGIS <http://postgis.net>`_ and `PostgreSQL <http://postgresql.org>`_ geospatial database and adds routing and other network analysis functionality. A predecessor of pgRouting – pgDijkstra, written by Sylvain Pasche from `Camptocamp <http://camptocamp.com>`_, was later extended by `Orkney <http://www.orkney.co.jp>`_ and renamed to pgRouting. The project is now supported and maintained by `Georepublic <http://georepublic.info>`_, `iMaptools <http://imaptools.com/>`__ and a broad user community.

pgRouting is part of `OSGeo Community Projects <http://wiki.osgeo.org/wiki/OSGeo_Community_Projects>`_ from the `OSGeo Foundation <http://osgeo.org>`_ and included on `OSGeo Live <http://live.osgeo.org/>`_.


.. _license:

Licensing
-------------------------------------------------------------------------------

The following licenses can be found in pgRouting:

.. list-table::
   :widths: 250 500

   * - **License**
     -
   * - GNU General Public License, version 2
     - Most features of pgRouting are available under `GNU General Public License, version 2 <http://www.gnu.org/licenses/gpl-2.0.html>`_.
   * - Boost Software License - Version 1.0
     - Some Boost extensions are available under `Boost Software License - Version 1.0 <http://www.boost.org/LICENSE_1_0.txt>`_.
   * - MIT-X License
     - Some code contributed by iMaptools.com is available under MIT-X license.
   * - Creative Commons Attribution-Share Alike 3.0 License
     - The pgRouting Manual is licensed under a `Creative Commons Attribution-Share Alike 3.0 License <http://creativecommons.org/licenses/by-sa/3.0/>`_.

In general license information should be included in the header of each source file.


Contributors
-------------------------------------------------------------------------------

This Release Contributors
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Individuals (in alphabetical order)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Maoguang Wang, Vidhan Jain, Virginia Vergara

And all the people that give us a little of their time making comments, finding issues, making pull requests etc.

Corporate Sponsors (in alphabetical order)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

These are corporate entities that have contributed developer time, hosting, or direct monetary funding to the pgRouting project:

- `Georepublic <https://georepublic.info/en/>`__
- `Google Summer of Code <https://developers.google.com/open-source/gsoc/>`_
- `iMaptools <http://imaptools.com>`__
- `Paragon Corporation <http://www.paragoncorporation.com/>`_

Contributors Past & Present:
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Individuals (in alphabetical order)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Akio Takubo, Andrea Nardelli, Anton Patrushev, Ashraf Hossain, Christian Gonzalez, Daniel Kastl, Dave Potts, David Techer, Denis Rykov, Ema Miyawaki, Florian Thurkow, Frederic Junod, Gerald Fenoy, Jay Mahadeokar, Jinfu Leng, Kai Behncke, Kishore Kumar, Ko Nagase, Manikata Kondeti, Mario Basa, Martin Wiesenhaan,  Maxim Dubinin, Maoguang Wang, Mohamed Zia, Mukul Priya, Razequl Islam, Regina Obe, Rohith Reddy, Sarthak Agarwal, Stephen Woodbridge, Sylvain Housseman, Sylvain Pasche, Vidhan Jain, Virginia Vergara

Corporate Sponsors (in alphabetical order)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

These are corporate entities that have contributed developer time, hosting, or direct monetary funding to the pgRouting project:

- Camptocamp
- CSIS (University of Tokyo)
- Georepublic
- Google Summer of Code
- iMaptools
- Orkney
- Paragon Corporation


More Information
-------------------------------------------------------------------------------

* The latest software, documentation and news items are available at the pgRouting web site http://pgrouting.org.
* PostgreSQL database server at the PostgreSQL main site http://www.postgresql.org.
* PostGIS extension at the PostGIS project web site http://postgis.net.
* Boost C++ source libraries at http://www.boost.org.
* Computational Geometry Algorithms Library (CGAL) at http://www.cgal.org.
* The Migration guide can be found at https://github.com/pgRouting/pgrouting/wiki/Migration-Guide.

