P4vasp software download free is a visualization suite for the Vienna Ab-initio Simulation Package (VASP) in chemistry. It contains an extensible GUI framework, that can be used to view material structure, density of states, band-structure and more.
It provides a Python library, that greatly simplifies the process of manipulation of the VASP input and output data in Python scripts. P4vasp utilizes also many handy routines and objects e.g. for creating 2D graphs, data storage (xml,DOM) or simple matrix library.
P4Vasp is one of the Graphical User Interface to visualise spacial arrangements of atoms from their geometrical coordinates. Using directly the output files generated by the first principle modelling package VASP, this software is rather popular.