The HKL suite is a package of programs intended for the analysis of X-ray diffraction data collected from single crystals, and consists of three programs: XdisplayF for visualization of the diffraction pattern, Denzo for data reduction and integration, and Scalepack for merging and scaling of the intensities obtained by Denzo or other programs.
An Oscillation Data Processing Suite for Macromolecular Crystallography, by Daniel Gewirth.