KRAKENX: software for the generation of alignment-independent 3D descriptors

The KRAKENX software calculates a large variety of molecular descriptors based on quantum chemistry computations. The program supports over 2000 three-dimensional descriptors that are calculated from the output of different quantum chemistry packages. The current implementation supports semi-empirical MOPAC-based computations and primarily focuses on orientation-independent descriptors that have been discussed in the literature. The descriptor performance has been exemplified using a number of large and diverse datasets and can be seen to produce parsimonious linear models. The software can be run on multiple platforms and is available to academics free of charge.