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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-1.16-win64.exe Size: 152332561 bytes MD5: 9672aa27cc7ea1d6cfe9c8680516c741	Dec 17, 2021	Instructions Documentation Runs on Windows 7 or later.
Mac OS X 64-bit	chimera-1.16-mac64.dmg Size: 192170325 bytes MD5: 02cef4e3bf4e2ad5aae44c7104328ade	Dec 17, 2021	Instructions Documentation Runs on Mac OS X 10.12 or later.
Linux 64-bit	chimera-1.16-linux_x86_64.bin Size: 154080130 bytes MD5: 0167c57d7e24c9b69e04fd0dabc5ce87	Dec 17, 2021	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: 152354535 bytes MD5: 6bec666c71ab18cd990a617f7281b922	Jun 17, 2022	(See production version for installation instructions) Runs on Windows 7 or later. Release notes
Mac OS X 64-bit	chimera-alpha-mac64.dmg Size: 192122686 bytes MD5: 705b877481160b5c655ec2cc2673491e	Jun 17, 2022	(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: 154100920 bytes MD5: 87abdb652084b22443fbe8fca74433a7	Jun 17, 2022	(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: 148029829 bytes MD5: 3e2af0a35d9973b128bb1d3985594c44	Jun 17, 2022	(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-1.16-linux_x86_64_osmesa.bin Size: 148005206 bytes MD5: 2e26d2e52eaf4c6f6f2b2b4c632439fa	Dec 17, 2021	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).