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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.
Tip: Use Chimera's ChimeraX export to convert Chimera scenes to ChimeraX.

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-1.19-win64.exe Size: 152587563 bytes MD5: fa668fce1f0be2d9894fcf7187dc859a	Mar 06, 2025	Instructions Documentation Runs on Windows 7 or later.
Mac OS X 64-bit	chimera-1.19-mac64.dmg Size: 162110956 bytes MD5: 3aba286d8cbe684a66f7bbb5c9e90fff	Mar 06, 2025	Instructions Documentation Runs on Mac OS X 10.12 or later.
Linux 64-bit	chimera-1.19-linux_x86_64.bin Size: 155519902 bytes MD5: 995ae1c8c264c90c59af981e7c788c69	Mar 06, 2025	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: 152605778 bytes MD5: 2ac39513a1890bb87d71acb580296323	Apr 09, 2025	(See production version for installation instructions) Runs on Windows 7 or later. Release notes
Mac OS X 64-bit	chimera-alpha-mac64.dmg Size: 162125200 bytes MD5: bfddcc0d79dc35e3e6f9f1119b1a7320	Apr 09, 2025	(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: 155537504 bytes MD5: 02b6971ecff2d0fded3b3252421322c1	Apr 09, 2025	(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: 149466040 bytes MD5: 42745701f67ee2966fe5f11de15afc22	Apr 09, 2025	(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-1.19-linux_x86_64_osmesa.bin Size: 149448194 bytes MD5: aace74cbbbb3dfc5acc7d88b2851ae44	Mar 06, 2025	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).