If you want to download everything that is available for your target system then select this option:

Otherwise select specific packages from the list below:

	CCP4 Crystallographic program suite Learn more...	Executables Source code	93.0 MB 56.0 MB
	Phaser and CCTBX Learn more...	Executables Source code	1.8 MB 14.0 MB
	CCP4 Molecular Graphics Learn more...	Executables	50.0 MB
	CHOOCH Learn more...	Source code	2.8 MB
	COOT Learn more...	Executables	103.0 MB

The following packages are required by some of the CCP4 packages but are not part of CCP4, and it is possible that they are already present on your system. They are provided here for your convenience and are not subject to the CCP4 licence.

	Tcl/Tk and Blt Learn more...		Needed for CCP4	6.7 MB
	Python Learn more...		Needed for Phaser and CCTBX	8.8 MB