MOLecule analysis and MOLecule display

Welcome to
The Official

Release 2K.2 of MOLMOL available!


MOLMOL is a molecular graphics program for displaying, analyzing, and manipulating the three-dimensional structure of biological macromolecules, with special emphasis on the study of protein or DNA structures determined by NMR. The program runs on UNIX and Windows NT/95/98/2000 and is freely available.

A more detailed introduction is given on the page originally created for the BRUKER web site. There also is a (very dated) official project description.


If you want to know more, it is best to look at the hypertext version of the manual. This also contains a full list of features. We also have a tutorial showing a few step by step examples, and the online manual pages are available in hypertext format. All these files are also distributed with the program.


The program was written by Reto Koradi (see also his picture) under the supervision of Martin Billeter, in the group of Prof. Kurt Wüthrich. Our whole group contributed a lot with testing and many helpful suggestions.


We have a gallery of nice images created with MOLMOL by ourselves, and another one with images by outside users. We also have a MOVIE (not of very high artistic or scientific value, more a feasibility study).

Legal Conditions

The program is freely available for everybody. Please note that this does not mean that it is public domain in the true sense. A file giving the detailed conditions accompanies the program and can also be read directly here. As long as you just use the program, and do not plan to copy, modify or redistribute it in any way, there is just one simple rule:

Whenever figures prepared by MOLMOL are used somewhere, like in publications or lectures, you must include a reference to the following paper, normally in the figure caption, something like "figure prepared with the program MOLMOL (Koradi et al., 1996)":

Koradi, R., Billeter, M., and Wüthrich, K. (1996) J Mol Graphics 14, 51-55.
MOLMOL: a program for display and analysis of macromolecular structures.


The current release 2K.2 can be downloaded from the following master ftp site: North American users will prefer the following mirror site at the UT Southwestern Medical Center (thanks to Kevin Gardner). Please download the README file first. It will give you information on which of the files you need, and how to unpack and install the program. Files that were contributed by users, like binaries for Linux, can be found in the contrib subdirectory, see the README file in that directory for details.

Mailing List

There is a mailing list for discussing items related to MOLMOL. All users are recommended to subscribe to this list, by sending mail without subject and "subscribe molmol-forum" in the message body to If you need more detailed instructions, send a mail with the contents "help" to this address. You will also receive instructions about the use of the mailing list upon subscription. Problems encountered while using the program, or general questions, should be posted to the mailing list, not sent directly to the authors. The mailing list is archived:
  • Archive 1996
  • Archive 1997
  • Archive 1998
  • Archive 1999
  • Archive 2000
  • Archive 2001
  • Archive 2002
  • Archive 2003 (current)
  • More Information

  • Known Problems
  • Questions and Answers
  • Q & A about Windows Version
  • Linux Compile Mini HowTo (by Dieter Kastrau)
  • Performance Improvement Hints
  • Plotting Hints
  • MOLMOL and MIME Types.
  • Contributions
  • Release History

  • Last modified: January 25, 2003

    Reto Koradi,