Copyright © 1995-1996 Theoretical Biophysics Group and the Board of Trustees of the University of Illinois
This program is free software but is not in the public domain. It is distributed in the hope that it will be useful to the molecular modelling community, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Should the software prove defective YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
Permission is granted for research, educational, and commercial use and modification so long as 1) VMD and any derived works are not redistributed for a fee, 2) proper credit is given to the Theoretical Biophysics group for their work, and 3) programs derived from VMD must be given a different name. If you use VMD in a way you think is interesting or novel, we would like to know about it.
Some of the code and executables used by VMD have different restrictions. They are:
1) STRIDE, the program used for secondary structure calculation, is free to both academic and commercial sites provided that STRIDE will not be a part of a package sold for money. The use of STRIDE in commercial packages is not allowed without a prior written commercial license agreement. See http://www.embl-heidelberg.de/stride/stride_info.html.
2) Det, Eigen, and Invert are part of the LASSTools package from
Cornell. See http://www.lassp.
cornell.edu/LASSPTools/LASSPTools.html.
The executables may be redistributed to other users. Note that this
redistribution may not be done for a fee (other than a material media
charge, if necessary). Ownership resides with the authors of the
programs.
3) The source code for SURF is copyrighted by the original author, Amitabh Varshney, and the University of North Carolina at Chapel Hill. Permission to use, copy, modify, and distribute this software and its documentation for educational, research, and non-profit purposes is hereby granted, provided this notice, all the source files, and the name(s) of the original author(s) appear in all such copies.
BECAUSE THE CODE IS PROVIDED FREE OF CHARGE, IT IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED.
This software was developed and is made available for public use with the support of the National Institutes of Health, National Center for Research Resources under grant RR02170.
See ftp://ftp.cs.unc.edu/pub/projects/GRIP/SURF/surf.tar.Z .
4) The perl script to retrieved web documents, url_get, was written by Jack Lund at the University of Texas as Austin. There appear to be no restrictions on its use.
See http://uts.cc.utexas.edu/~zippy/projects/url_get/ .
5) Several parts of the GNU C++ class library are used in VMD, including the String and Regex classes, alloca, and librx regular expression library. As per the GNU General Public License v. 2, the modified code is available as part of the general VMD source distribution and may be freely used and altered.