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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: 152606728 bytes MD5: 53a4bd7193da1a0d2addf7bf8e89b8d8	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: 162124191 bytes MD5: 555a52a5b12e1a617013213bf0f66c8d	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: 155536992 bytes MD5: da31096529153e0470047c61d5bec841	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: 149464973 bytes MD5: 86636b7c67ec7459479efbd0d71c03d5	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.