August 9, 2006
Please Note: Xtalview has not been supported since 2003, and it is beginning to show. New architectures, such as the 64-bit systems and the Intel Macintosh, do not really support the Xtalview toolkit on which the GUI is based -- and it is NOT easy to change the GUI. Xtalview takes the phrase "not 64-bit clean" to new heights (or depths). This should not be taken as a criticism of Xtalview design decisions, because at the time Xtalview was written, Xtalview was just about the ONLY cross-platform toolkit. Xtalview continues to work on a number of current systems, so we continue to make it available.

For new systems, users should consider Duncan McRee's MIFit.

Xtalview may be suitable for some problems, and help will be provided as available, but there will be little to zero maintenance on the program itself as there is no money to pay for it.


XtalView is a complete package for solving a macromolecular crystal structure by isomorphous replacement, including building the molecular model. It runs on Sun, DEC, SGI, IBM and PC/Linux computers and takes full advantage of the modern workstation environment. It has a simple but comprehensive windows based interface. The xtalmgr, the main menu drives a suite of crystallographic modules by click of an icon. XtalView maintains log files of the computations done. Standard file formats are used, which facilitates communication between XtalView and programs such as X-PLOR, TNT, and MERLOT.

XtalView is described in the book 'Practical Protein Crystallography' by Duncan McRee, who also designed the program.

The CCMS distributes a on-line User Guide 4.0 and a suite of manual pages of XtalView4.0 package in both html and postscript format.

Release Note 4.0

Please take a look at our Xtalview FAQ containing answers to our most common questions regarding downloading and xtalview use.


XtalView is free for non-profit use. For-profit users should contact Duncan McRee (, Telephone (858) 554-9235) concerning licensing. A binary distribution is available through the e-mail responder; source code is available, but requires a signed license.

To receive information on obtaining XtalView software, send e-mail to:

        leave the SUBJECT  line blank

        type ' get xtalview ' in the message
This is an automated process, and you'll receive instructions on how to get a copy of the XtalView binaries and also a license agreement form for the source code of XtalView by return e-mail. We ask that you return the signed license agreement if you'd like to receive the source code of XtalView ( ~100000 lines of C and Fortran )

If you have web client that supports forms (e.g. Mosaic 2.0), you may get the information by filling out the form below:

Request a XtalView license

Your E-Mail Address:

Last updated: August 9, 2006