Download UCSF ChimeraX ChimeraX docs icon ChimeraX home icon

UCSF ChimeraX is the next-generation visualization program from the Resource for Biocomputing, Visualization, and Informatics at UC San Francisco.

Features

Compared to Chimera, ChimeraX has a more modern user interface, better graphics, and much faster handling of large structures. For more information, see:

Missing Features

ChimeraX has several completely new features compared to Chimera (see advantages), but not yet all of its commonly used capabilities. Most features are implemented as commands only, not (yet) as graphical interfaces, and missing features include dock prep, color key, per-model clipping, saving and restoring scenes, independent centers of rotation, calculating axes/planes/centroids (except planes and centroids in daily build), “worms” to show residue attributes, reading attribute assignment files, modeling loops and missing segments, combine models, join models, trajectory analysis other than simple playback, calculating RMSD in the current position (without fitting), and many others. Chimera capabilities grew significantly over several years, and likewise, ChimeraX will contain more of these important features as development proceeds.

Although similar in many aspects, ChimeraX is not backward compatible with Chimera and does not read Chimera session files.

Latest Production Release

Operating System Distribution Notes
Windows 10 64-bit ChimeraX-1.0.exe
build: 2020-06-04 19:15:37 PDT
committed: 2020-06-04 16:15:07 PDT
size: 296.1 MiB
md5: e44918ed58a49e38a898fd384b70d9b1
Download is a Windows installer.
Tested on Windows 10.
See Windows notes below.
macOS 10.13 64-bit ChimeraX-1.0.dmg
build: 2020-06-04 19:37:10 PDT
committed: 2020-06-04 16:15:07 PDT
size: 330.9 MiB
md5: 25338fabeca0b45a671351b22c6e808f
Download is a disk image containing the application.
Tested on macOS 10.13. This application does not run on 10.12 or older due to operating system changes.
Generic Linux 64-bit ChimeraX-1.0.tar.gz
build: 2020-06-04 19:22:59 PDT
committed: 2020-06-04 16:15:07 PDT
size: 362.6 MiB
md5: 1240eaf378fee2db7a8f6c596926d989
Download is a tarball of the chimerax application directory.
ChimeraX executable is chimerax/bin/ChimeraX.
Tested on Ubuntu 16.10 and Fedora 25.
See Linux notes below.
Ubuntu 16.04 (Linux) 64-bit ucsf-chimerax_1.0_amd64.deb
build: 2020-06-04 19:38:04 PDT
committed: 2020-06-04 16:15:07 PDT
size: 268.0 MiB
md5: ca152afc43d428318f2f28ecffadd455
Download is a Ubuntu 16.04 ucsf-chimerax package. Install with:
sudo apt-get install ~/Downloads/ucsf-chimerax_1.0_amd64.deb
ChimeraX executable is /usr/bin/chimerax.
Ubuntu 18.04 (Linux) 64-bit ucsf-chimerax_1.0_amd64.deb
build: 2020-06-04 19:46:33 PDT
committed: 2020-06-04 16:15:07 PDT
size: 271.8 MiB
md5: bfaa7450aeec3049f8c118592c1708cd
Download is a Ubuntu 18.04 ucsf-chimerax package. Install with:
sudo apt-get install ~/Downloads/ucsf-chimerax_1.0_amd64.deb
ChimeraX executable is /usr/bin/chimerax.
Ubuntu 20.04 (Linux) 64-bit ucsf-chimerax_1.0_amd64.deb
build: 2020-06-04 19:55:20 PDT
committed: 2020-06-04 16:15:07 PDT
size: 280.1 MiB
md5: 63468052ec57362620bcf7908b9c4453
Download is a Ubuntu 20.04 ucsf-chimerax package. Install with:
sudo apt-get install ~/Downloads/ucsf-chimerax_1.0_amd64.deb
ChimeraX executable is /usr/bin/chimerax.
Red Hat/CentOS 7 (Linux) 64-bit ucsf-chimerax-1.0-1.el7.x86_64.rpm
build: 2020-06-04 20:07:12 PDT
committed: 2020-06-04 16:15:07 PDT
size: 277.0 MiB
md5: 9981847e365fd265e9212d24e86ead73
Download is a CentOS/RHEL 7 ucsf-chimerax package. Install with:
sudo yum install ~/Downloads/ucsf-chimerax-1.0-1.el7.x86_64.rpm
ChimeraX executable is /usr/bin/chimerax.
Red Hat/CentOS 8 (Linux) 64-bit ucsf-chimerax-1.0-1.el8.x86_64.rpm
build: 2020-06-04 20:16:53 PDT
committed: 2020-06-04 16:15:07 PDT
size: 265.4 MiB
md5: 6f5f54849c40f3c7437ac9351a0c6cb2
Download is a CentOS/RHEL 8 ucsf-chimerax package. Install with:
sudo yum install ~/Downloads/ucsf-chimerax-1.0-1.el8.x86_64.rpm
ChimeraX executable is /usr/bin/chimerax.

Daily Builds

Daily builds are generated automatically each night from the development source code (see the change log). While a given build may have unforeseen problems, these are often fixed by the next day. Daily builds are both a preview of the next production release and a testbed for prototyping new features and bug fixes.

Operating System Distribution Notes
Windows 10 64-bit chimerax-daily.exe
fetching build information...
Download is a Windows installer.
Tested on Windows 10.
See Windows notes below.
macOS 10.13 64-bit chimerax-daily.dmg
fetching build information...
Download is a disk image containing the application.
Tested on macOS 10.13. This application does not run on 10.12 or older.
Generic Linux 64-bit chimerax-daily.tar.gz
fetching build information...
Download is a tarball of the chimerax application directory.
ChimeraX executable is chimerax/bin/ChimeraX.
Tested on Ubuntu 16.10 and Fedora 25.
See Generic Linux notes below.
Ubuntu 16.04 (Linux) 64-bit chimerax-daily.deb
fetching build information...
Download is a Ubuntu 16.04 ucsf-chimerax-daily package. Install with:
sudo apt-get install ~/Downloads/chimerax-daily.deb
ChimeraX executable is /usr/bin/chimerax-daily.
Ubuntu 18.04 (Linux) 64-bit chimerax-daily.deb
fetching build information...
Download is a Ubuntu 18.04 ucsf-chimerax-daily package. Install with:
sudo apt-get install ~/Downloads/chimerax-daily.deb
ChimeraX executable is /usr/bin/chimerax-daily.
Ubuntu 20.04 (Linux) 64-bit chimerax-daily.deb
fetching build information...
Download is a Ubuntu 20.04 ucsf-chimerax-daily package. Install with:
sudo apt-get install ~/Downloads/chimerax-daily.deb
ChimeraX executable is /usr/bin/chimerax-daily.
Red Hat/CentOS 7 (Linux) 64-bit chimerax-daily.rpm
fetching build information...
Download is a Red Hat/CentOS 7 ucsf-chimerax-daily package. Install with:
sudo yum install ~/Downloads/chimerax-daily.rpm
ChimeraX executable is /usr/bin/chimerax-daily.
Red Hat/CentOS 8 (Linux) 64-bit chimerax-daily.rpm
fetching build information...
Download is a Red Hat/CentOS 8 ucsf-chimerax-daily package. Install with:
sudo yum install ~/Downloads/chimerax-daily.rpm
ChimeraX executable is /usr/bin/chimerax-daily.

Change Log

Platform Notes

Generic Linux Notes
The Generic Linux version does not run on Red Hat/CentOS 7, for those you need to install the CentOS 7 rpm. The Generic Linux version of ChimeraX is compiled on Debian 8 using gcc 4.9. It also runs on Ubuntu 16.04 and later versions. However, we recommend installing the debian package (.deb file) for your version of Ubuntu so all of the prerequistes are installed. Other Linux distributions have not been tested and might require additional libraries to be installed.

Windows Notes
ChemOffice 2002 supplies an ancient version of the OpenGL library that prevents ChimeraX from starting up. To fix it, you'll need to remove or rename its opengl32.dll file; typically found in "C:\Program Files (x86)\ChemOffice2002\Common\DLLs\opengl32.dll".