.. _apps:

================================================================================
Applications
================================================================================

Bundled with PROJ comes a set of small command line utilities. The ``proj``
program is limited to converting between geographic and projection coordinates
within one datum. The ``cs2cs`` program operates similarly, but allows
translation between any pair of definable coordinate systems, including support
for basic datum translation. The ``geod`` program provides the ability to do
geodesic (great circle) computations. ``gie`` is the program used for
regression tests in PROJ.

.. toctree::
   :maxdepth: 1

   proj
   cct
   cs2cs
   geod
   gie