1 The OpenFOAM-Extend Project
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3 Web site: http://www.extend-project.de/
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5 The goal of the OpenFOAM -Extend Project is to open the OpenFOAM CFD toolbox
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6 to community contributed extensions in the spirit of the Open Source
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9 Software under the name OpenFOAM has been developed by a large group of
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10 volunteers starting in 1991 and has spread through scientific and engineering
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11 community in the late 1990s and early 2000s. Its main strength was the spirit
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12 of open collaboration in the community: the aim of the OpenFOAM-Extend Project
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13 is to formalize this spirit.
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16 Currently, the word "OpenFOAM" is held as a trademark by a commercial
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17 company, not associated with the Open Source development effort of this
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18 software. While the author acknowledges the existence of Trademark,
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19 association of trademarked phrase with the the code developed by third
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20 parties and including the author is misleading in terms of authorship,
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21 ownership of intellectual property of the source code.
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23 In the absence of a legal resolution, we shall refer to the project as the
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24 -Extend project and software as "OpenFOAM", as per agreement between
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25 Prof. Hrvoje Jasak and Mr. Henry G. Weller of 30 September 2004.
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27 The excerpts below are from the correspondences of Dr.Jasak and are to
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28 his knowledge all the relevant writings about this topic. Although
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29 this topic has been discussed before in public forums there exists no
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30 'official' answer by OpenCFD on this issue. In the interest of
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31 fairness a reference (link) to such an answer will be added to this
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32 document as soon as we come aware of it.
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38 I propose that we make FOAM open-source and shutdown Nabla, that way we
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39 are free to pursue whatever future we wish independently.
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45 The first release of the OpenFOAM source code of 10 December 2004
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46 and subsequent clarification of 16 February 2005.
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52 Regarding the new setup, I would like to thank you for your effort i
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53 n making FOAM public domain, with crucial comments regarding some
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56 - in the header files for the open version of foam there exists a line
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57 which claims copyright for OpenCFD Ltd:
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59 Copyright (C) 1991-2004 OpenCFD Ltd.
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61 I am not sure whether it is possible to claim copyright over a GPL piece
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62 of software, but this is at least misleading. In order for this
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63 statement to be true, OpenCFD Ltd. would need to purchase the copyright
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64 from Nabla Ltd. and from you and me personally (due to unresolved
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65 ownership and the remaining payments Nabla Ltd. needs to make to us
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66 regarding the original transfer of copyright). I can offer a number
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67 of solutions acceptable to me as follows:
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69 1) no Copyright statement apart from the required GPL statement
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70 2) Copyright OpenFOAM.org
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71 3) Copyright Henry Weller, Hrvoje Jasak et al
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72 4) Copyright OpenCFD and Hrvoje Jasak
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73 5) List of authors instead of the copyright statement
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75 I am also prepared to consider any other reasonable ideas along the same
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76 lines (including the sale of copyright, which would be a bit pointless
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77 at this stage) - please advise.
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82 Under the GPL there has to be an organization in place to enforce the GPL
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83 if there are violation, these are part of the rules. OpenCFD undertakes
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84 that responsibility hence the copyright.
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92 From the above it is clear that OpenCFD does not own the rights or
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93 authorship of the source code, which is currently concealed in public.
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94 For further details, I have been attempting to get a formal response by
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95 this company for 6 years now, without success. It is time to move on.
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97 The current Copyright notice does not fairly describe the authorship of
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98 the software. In the spirit of the open source development model, the
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99 -Extend project wishes to formally acknowledge all contributors and
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100 developers of OpenFOAM from its inception to today.
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102 As this issue still remains unresolved, and the list of contributors
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103 has been removed from the OpenFOAM source code by Mr. Weller in 2006,
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104 we shall re-base OpenFOAM as an Open Source community-based project
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105 and associate the authorship and Copyright in each case with the
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111 This offering is not affiliated with OpenCFD Limited, owner of the OpenFOAM
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115 Please find the official website of OpenCFD Limited at http://www.openfoam.org
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116 In particular, OpenCFD Limited hosts the following legal statements:
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117 - licensing and intellectual property: http://www.openfoam.com/legal/index.php
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118 - trademark policy: http://www.openfoam.com/legal/trademark-policy.php
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