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

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, calculating axes/planes/centroids, “worms” to show residue attributes, reading attribute assignment files, modeling loops and missing segments, combine models, join models, trajectory analysis other than simple playback, 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.

Version 1.0 Release Candidate Builds

Please try these candidates for the next production release. A release candidate has the same features as the daily build when it was branched (see the change log), and is automatically regenerated each night to incorporate any new bug fixes.

If your work depends on extension bundles that are provided by the ChimeraX Toolshed, then you might need to wait until the author of bundle has updated it.

Operating System Distribution Notes
Windows 10 64-bit chimerax-rc.exe
fetching build information...
Download is a Windows installer.
Tested on Windows 10.
See Windows notes below.
macOS 10.13 64-bit chimerax-rc.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 due to operating system changes.
Generic Linux 64-bit chimerax-rc.tar.gz
fetching build information...
Download is a tarball of the chimerax application directory.
ChimeraX executable is chimerax/bin/ChimeraX.
See Generic Linux notes below.
Ubuntu 16.04 (Linux) 64-bit chimerax-rc.deb
fetching build information...
Download is a Ubuntu 16.04 ucsf-chimerax-rc package. Install with:
sudo apt-get install ~/Downloads/chimerax-rc.deb
ChimeraX executable is /usr/bin/chimerax.
Ubuntu 18.04 (Linux) 64-bit chimerax-rc.deb
fetching build information...
Download is a Ubuntu 18.04 ucsf-chimerax-rc package. Install with:
sudo apt-get install ~/Downloads/chimerax-rc.deb
ChimeraX executable is /usr/bin/chimerax.
Ubuntu 20.04 (Linux) 64-bit chimerax-rc.deb
fetching build information...
Download is a Ubuntu 20.04 ucsf-chimerax-rc package. Install with:
sudo apt-get install ~/Downloads/chimerax-rc.deb
ChimeraX executable is /usr/bin/chimerax.
Red Hat/CentOS 7 (Linux) 64-bit chimerax-rc.rpm
fetching build information...
Download is a Red Hat/CentOS 7 ucsf-chimerax-rc package. Install with:
sudo yum install ~/Downloads/chimerax-rc.rpm
ChimeraX executable is /usr/bin/chimerax.
Red Hat/CentOS 8 (Linux) 64-bit chimerax-rc.rpm
fetching build information...
Download is a Red Hat/CentOS 8 ucsf-chimerax-rc package. Install with:
sudo yum install ~/Downloads/chimerax-rc.rpm
ChimeraX executable is /usr/bin/chimerax.

Production Releases

Production releases provide a stable platform for extension bundles provided by the ChimeraX Toolshed. Post-release, bug fixes and new features are made available through updated bundles in the Toolshed.

Release 0.93 (April 3, 2020)

Release 0.93 new features include:

See the change log for a more complete list.

Operating System Distribution Notes
Windows 10 64-bit ChimeraX-0.93.exe
build: 2020-04-03 23:07:29 PDT
committed: 2020-04-03 16:15:18 PDT
size: 463.6 MiB
md5: dcb02dbec4e34b8432c906b9d3f05b29
Download is a Windows installer.
Tested on Windows 10.
See Windows notes below.
macOS 10.13 64-bit ChimeraX-0.93.dmg
build: 2020-04-03 23:07:29 PDT
committed: 2020-04-03 16:15:18 PDT
size: 324.9 MiB
md5: 78095ec60e3f70b29b9cf49784d24198
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-0.93.tar.gz
build: 2020-04-03 23:07:29 PDT
committed: 2020-04-03 16:15:18 PDT
size: 362.6 MiB
md5: 188f1ce551805517bb246410c0b23b13
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_0.93_amd64.deb
build: 2020-04-03 23:07:29 PDT
committed: 2020-04-03 16:15:18 PDT
size: 255.7 MiB
md5: a2e2aa83c6a4110631b883a735983912
Download is a Ubuntu 16.04 ucsf-chimerax package. Install with:
sudo apt-get install ~/Downloads/ucsf-chimerax_0.93_amd64.deb
ChimeraX executable is /usr/bin/chimerax.
Ubuntu 18.04 (Linux) 64-bit ucsf-chimerax_0.93_amd64.deb
build: 2020-04-03 23:07:29 PDT
committed: 2020-04-03 16:15:18 PDT
size: 259.4 MiB
md5: a88d377e1caba8fc790d41c743dfe607
Download is a Ubuntu 18.04 ucsf-chimerax package. Install with:
sudo apt-get install ~/Downloads/ucsf-chimerax_0.93_amd64.deb
ChimeraX executable is /usr/bin/chimerax.
Red Hat/CentOS 7 (Linux) 64-bit ucsf-chimerax-0.93-1.el7.x86_64.rpm
build: 2020-04-03 23:07:29 PDT
committed: 2020-04-03 16:15:18 PDT
size: 262.8 MiB
md5: 7f84464b753f4fbbf0830a44b6be108c
Download is a Red Hat/CentOS 7 ucsf-chimerax package. Install with:
sudo yum install ~/Downloads/ucsf-chimerax-0.93-1.el7.x86_64.rpm
ChimeraX executable is /usr/bin/chimerax.

Daily Builds

Currently, only the candidate builds are being done daily.
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
To run ChimeraX, you need to have a a recent Microsoft Visual C++ runtime installed from Microsoft. In particular, you should install vc_redist.x64.exe. Typically, it is already present on computers with up-to-date patches. And in the future, it will be included as part of the installer.

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".