In view of the fact that the CHARMM is in our database as a program to support or convert various file extensions, you will find here a CHARMM download link. Get the software from the CHARMM developer website. Before you will download the program, make sure that you not have application CHARMM on your device installed yet - this will allow you to save some space on your disk.
We do not store any files with the setup of the CHARMM on our server but help to find the most reliable source from where you can download the application from. By clicking on the button "More info about CHARMM" you should be directed to the official website of the CHARMM developer where you can download the application.
More info about CHARMM