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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-1.17.1-win64.exe Size: 142704602 bytes MD5: 1c9aca9292419a9c37a137562f6d91e0	Apr 19, 2023	Instructions Documentation Runs on Windows 7 or later.
Mac OS X 64-bit	chimera-1.17.1-mac64.dmg Size: 184831985 bytes MD5: 90fdf3cacfa5c9a7de0f7f999c8e2dda	Apr 19, 2023	Instructions Documentation Runs on Mac OS X 10.12 or later.
Linux 64-bit	chimera-1.17.1-linux_x86_64.bin Size: 149832020 bytes MD5: e8d2959b0846f6cfe026a6a61c88bd96	Apr 19, 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: 142724786 bytes MD5: e30495793bb5369240f17f0a77e89026	May 31, 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: 183823147 bytes MD5: 147f236f5e7efef5c304614e97a5023a	May 31, 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: 149868518 bytes MD5: 31f578e3237cffd7a5aaa617839aecf8	May 31, 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: 143794127 bytes MD5: 0c9303ac49fdc5728b4c39daddb0ba81	May 31, 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-1.17.1-linux_x86_64_osmesa.bin Size: 143753546 bytes MD5: 1602489a95309602d9602ab25baa6a86	Apr 19, 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).