ParaView uses a permissive BSD license that enables the broadest possible audience, including commercial organizations, to use the software, royalty free, for most purposes. In addition, there are other licenses that are applicable because of other packages leveraged by ParaView or developed by collaborators. Lastly, there are specific packages for the ParaView binaries available on paraview.org that have applicable licenses.

Copyright (c) 2005-2008 Sandia Corporation, Kitware Inc.Sandia National Laboratories, New Mexico PO Box 5800 Albuquerque, NM 87185 Kitware Inc., 28 Corporate Drive, Clifton Park, NY 12065, USA

Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive license for use of this work by or on behalf of the U.S. Government. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of Kitware nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.

ParaView offers the possibility to extend its functionality in several directions. This encompasses modifications to the GUI, implementation of new sources (i.e. generation of predefined curves and bodies), definition of new selection functions etc. The most useful category of plugins are the Filters.