CCP4 Download pages

CCP4 Licence and Conditions

Before the download of the CCP4 Software Suite, please read the following licence agreement, and press the "Accept" button.

Preamble

CCP4 distributes a broad collection of software from a variety of sources, from both within and external to the CCP4 project.

For the main CCP4 suite, there is a single licence document governing the terms of use of the CCP4 suite. Certain components of the CCP4 suite may have their own conditions of use, and these should be read in addition to the CCP4 licence.

Where we are able, we also re-distribute from the CCP4 web site additional packages that are useful or necessary for running CCP4 (these are listed as External Tools on the downloads pages. These are not covered by the CCP4 licence and have their own terms of use.

Details

The suite is available without cost to academic and non-profit institutions who will not be using the CCP4 package for commercial activities, subject to a completed CCP4 Academic Licence being returned to the CCP4 secretary.

A charge is made to commercial users (this includes academic or research institutions offering a commercial service) who should contact the CCP4 secretary to make arrangements, see separate Commercial Users Page. Please note that all charges for the suite are used for CCP4 activities.

We provide the CCP4 libraries under version 3 of the LGPL licence. The relevant licence files are a modified GPLv3 licence (in Word, see also a poorly-formatted text version) together with the additional permissions of the LGPLv3 licence.

Please note:

• A listing of GNU software included in the CCP4 suite is available here
• Additional terms and conditions pertaining to some included 3rd party software are included in the distribution, and are also available here for reference
• The current version of the licence was made available in September 2005. This is required for existing versions of release 5.0 of the suite, release 6.0 of the suite and subsequent releases until further notice. The previous version of the academic licence is no longer valid.

Returning the licence

For non-profit users, the licence must be signed, and returned by post to the following address:

Secretary to CCP4 c/o Karen McIntyre
STFC Rutherford Appleton Laboratory
Didcot
OX11 0FA
United Kingdom

Alternatively, signed copies of the licence can be sent to the CCP4 invoicing inbox, CCP4DL@stfc.ac.uk.

Our policy is that we will not acknowledge receipt of academic licences unless specifically requested - please download the suite as soon as you have sent the signed licence.