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Download Chimera

Daily Builds
Snapshot Releases
Unsupported Releases
Old Releases

Tip: We recommend ChimeraX for higher performance and many new features instead of legacy Chimera.

Current Production Releases

See the release notes for a list of new features and other information.
For more recent changes, use the snapshot and daily builds; they are less tested but usually reliable.

64-bit Releases:

Platform	Installer, Size, and Checksum	Date	Notes
Microsoft Windows 64-bit	chimera-1.17.3-win64.exe Size: 153290658 bytes MD5: df8b63c8289c6e00ee0155b266aaa8e9	Jul 06, 2023	Instructions Documentation Runs on Windows 7 or later.
Mac OS X 64-bit	chimera-1.17.3-mac64.dmg Size: 192262314 bytes MD5: 928a88f9292c010f34bba9ec1bef6de9	Jul 06, 2023	Instructions Documentation Runs on Mac OS X 10.12 or later.
Linux 64-bit	chimera-1.17.3-linux_x86_64.bin Size: 155528316 bytes MD5: 129aa4b5a5c6ac577e1a3939c0d390c2	Jul 06, 2023	Instructions Documentation Compiled on CentOS 5.11.

32-bit releases are no longer supported.

Daily Builds

New builds are made when the code changes.
They are untested but are usually reliable and include new bug fixes not in the production release.

64-bit Builds:

Platform	Installer, Size, and Checksum	Date	Notes
Microsoft Windows 64-bit	chimera-alpha-win64.exe Size: 153309521 bytes MD5: b7ad3711e65a36fdd8348a67c6db9b94	Nov 27, 2023	(See production version for installation instructions) Runs on Windows 7 or later. Release notes
Mac OS X 64-bit	chimera-alpha-mac64.dmg Size: 162079664 bytes MD5: f865bf77a7d7f9c5c37d6dcb45fabc07	Nov 27, 2023	(See production version for installation instructions) Runs on Mac OS X 10.12 or later. Release notes
Linux 64-bit	chimera-alpha-linux_x86_64.bin Size: 155534989 bytes MD5: a99c09471d73e6a531f6262cbbd74451	Nov 27, 2023	(See production version for installation instructions) Compiled on CentOS 5.11. Release notes
Headless Linux 64-bit	chimera-alpha-linux_x86_64_osmesa.bin Size: 149468387 bytes MD5: 37a3dc49fd4f852a2b47627f4eceb567	Nov 27, 2023	(See production version for installation instructions) For (web) servers. Compiled on CentOS 5.11. Release notes

32-bit builds are no longer supported.

Snapshot Releases

These are development snapshots, not tested as much as the production releases.

Currently there are no snapshot releases.

Unsupported Releases

These are releases for platforms that we might support in the future or used to support.

64-bit Releases:

Platform	Installer, Size, and Checksum	Date	Notes
HP Tru64 Unix	chimera-1.3-tru64.exe Size: 95937093 bytes MD5: 7a84b2a39371a077c51bc348db057f28	Dec 09, 2008	Instructions Documentation Runs on Tru64 5.1B.
Headless Linux 64-bit	chimera-1.17.3-linux_x86_64_osmesa.bin Size: 149458795 bytes MD5: 2be2cc00bd8246c7c98d789b97664d07	Jul 06, 2023	Instructions Documentation For (web) servers. Compiled on CentOS 5.11.

32-bit Releases (for small memory computers):

Platform	Installer, Size, and Checksum	Date	Notes
Mac OS X	chimera-1.11.2-mac.dmg Size: 103774888 bytes MD5: fa2ccd9c17c456d71088e81129c862d6	Dec 02, 2016	Instructions Documentation Runs on Mac OS X 10.8 or later.
Mac OS X (X Windows)	chimera-1.11.2-mac_x11.dmg Size: 91230485 bytes MD5: a42b0463f5d51ff845cc459cd3de66c3	Dec 02, 2016	Instructions Documentation Runs on Mac OS X 10.8 or later.
Linux	chimera-1.11.2-linux.bin Size: 119742278 bytes MD5: 47dd12fbcbcfe01ea678599dd7001a6b	Dec 02, 2016	Instructions Documentation Compiled on Debian 4 (etch).
SGI IRIX	chimera-1.3-irix.exe Size: 91949632 bytes MD5: 503399e4bcddd58d736e686925feefeb	Dec 09, 2008	Instructions Documentation Runs on IRIX 6.5.10+ with current C++ runtime patches.
Headless Linux	chimera-1.11.2-linux_osmesa.bin Size: 113253259 bytes MD5: 4f8b829bf5838566ba7a3afefdccb02d	Dec 02, 2016	Instructions Documentation For (web) servers. Compiled on Debian 4 (etch).