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