Crystallographic Information Framework



RasMol is a 3-D molecular visualization tool capable of reading CIF, mmCIF and a number of other input file formats.


If you wish to install and use this software you should download the most up-to-date version from the above Web site. The links below are to copies which are suitable for browsing or for use if the primary Web site is not available. However, they may be out of date and lack the full functionality of the latest version.


This is version of April 2008. The program is under continual development.

Language and platform

The software is written in C and should compile and run in a command-line environment on any common operating system with a suitable C compiler. Binary executable files are available for a number of operating systems and machine hardwares.


Terms and conditions of use

Copyright in the software © the authors.
Authors: Roger Sayle, Arne Mueller and H. J. Bernstein

The software is distributed here under an open-source license or under the terms of the GNU Public License. Queries concerning any use not covered under this license should be directed to