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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: 152606297 bytes MD5: d4616a37a6e25de1ab7a269b8cc0c182	Oct 15, 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: 162116296 bytes MD5: e59570ab982a7ddde23ece607c2ded48	Oct 15, 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: 155537106 bytes MD5: 1ec99c81f4c986be7d3f35654377eea0	Oct 15, 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: 149466235 bytes MD5: 7c633241a45b3ec80484ae2a8384629c	Oct 15, 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
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.