This page is for downloading UCSF Chimera for commercial purposes — a license key will be required to complete the download. Noncommercial downloads do not require a license key. If you are downloading for noncommercial purposes, but believe you have been directed to this page in error, please turn off your VPN first and then try downloading again.
Commercial use of UCSF Chimera is covered by a written license agreement executed with each business entity. When you obtain a commercial license for UCSF Chimera, you will be provided with a license key that can be entered into the text box below. If you have not yet obtained a commercial license and wish to do so, please contact us by email. Additional information about licensing UCSF Chimera is available here.
If you already have a commercial UCSF Chimera license, either enter the license key in the text box or select the file on your local computer that contains the license key. (License keys begin with the line "---BEGIN_LICENSE---" and end with "---END_LICENSE---" and include everything between these lines.)