 Vienna Ab initio Simulation Package (VASP)
 Quantum opEnSource Package for Research in Electronic Structure, Simulation, and Optimization: QuantumESPRESSO package
 Allelectron fullpotential linearised augmentedplane wave (FPLAPW) "Electrons in kspace" Elk code
 Density functional for molecules and threedimensional periodic solids (DMol^{3}) code
 Octopus code for timedependent densityfunctional theory (TDDFT) calculations
 Fritz Haber Institute  Ab Initio Molecular Simulations (FHIaims) code
Molecular dynamics codes
 Largescale Atomic/Molecular Massively Parallel Simulator (LAMMPS)
 General Utility Lattice Program (GULP)
Structure visualization programs
 Visualization for Electronic and Structural Analysis (VESTA) program
 Graphical Display Interface for Structures (GDIS) program
 p4vasp: Visualization GUI for the VASP code
 Avogadro: An advanced molecule editor and visualizer
Other auxillary programs
 GIBBS2: Quasiharmonic Debye model for thermodynamics of solids.
 ELectron Spectroscopy Analysis (ElSA): Program package allowing to calculate NearEdge Xray Absorption Fine Structure (NEXAFS) and Xray Emission Spectra (XES) of bulk and surface materials within initial and finalstate oneelectron approximations as well as in the framework of the MahanNozieresDe Dominicis (MND) theory of the dynamical corehole screening.
 multiX: Program to calculate the energy levels of an atom in a crystal field defined by the charges and positions of its neighbours, and to plot the resulting XAS and RIXS spectra.
 Phonopy: Pythonbased lattice dynamics and phonon analyzer.
 Self Consistent Ab Initio Lattice Dynamical method (SCAILD; implemented in the scph code): A method for calculating temperaturedependent phonon spectra selfconsistently from first principles.
 XtalOpt: Opensource evolutionary algorithm designed to predict crystal structures.
 Site Occupancy Disorder (SOD) code: A package of programs and tools for modelling sitedisordered solids.
 Rigorous Investigation of Networks Generated using Simulations (RINGS): A Fortran90/MPI code developed to analyze the results of molecular dynamics simulations, using ring statistics to analyze connectivity.
 GitLab is an incredibly powerful open source code collaboration platform, git repository manager, issue tracker and code reviewer.
 LocalOrbital Basis Suite Towards ElectronicStructure Reconstruction (LOBSTER): A crystal orbital Hamilton population (COHP) that studies bonding and antibonding contributions to the bandstructure energy, and shows the contribution of a specific chemical bond to the band energy. The integrated COHP also hints towards the bond strength of the chemical bond in question.
 Z2Pack is a tool for calculating topological invariants. The method is based on tracking the evolution of hybrid Wannier functions, which is equivalent to the computation of the Wilson loop. Originally developed for calculating ℤ_{2} invariants, it is now also capable of calculating Chern numbers. Moreover, through the use of individual Chern numbers it can be used to identify any kind of topological phase.
 WannierTools: Use tight binding model to get the surface states of slab systems or edge states of nanowire systems or just bulk bands. Especially usefull for topological novel systems, including topological insulator, Dirac semimetal, Weyl semimetal, nodal line systems, nodal chain systems, triple point systems and unknown topological systems.
Highperformance computing
The Materials Theory Group (MTG) has assess to the highperformance supercomputer Tachyon at the Korea Institute of Science and Technology Information Supercomputing Center (KISTIKSC). Tachyon has been ranked 14th on TOP500 Nov. 2009, providing 307 TFlops Rpeak. The system is configured with 1,600 Sun X6275 blades (3,200 nodes) for 25,408 computing cores, and 1.7 PB of scratch disks with Sun JBODs and Lustre. 

Our group also has assess to high performance supercomputing facilities in Australia, through a longterm, active collaboration with the Condensed Matter Theory (CMT) group [led by Prof. Catherine Stampfl] in the School of Physics, University of Sydney, Australia. Details of the machines can be found below.
NCI National Facility, Australia  Fujitsu Primergy cluster, raijin
57,472 cores in the compute nodes, based on Intel Sandy Bridge 8core processors (2.6 GHz):
 Peak performance of approximately 1.2 PFlops
 Approximately 160 TBytes of main memory
 Infiniband FDR interconnect
 Approximately 10 PBytes of usable fast filesystem (for shortterm scratch space)
 Twothirds of the nodes have 32 GBytes, i.e., 2 GBytes/core
 Almost onethird of the nodes have 64 GBytes, i.e., 4 GBytes/core
 Two percent of the nodes have 128 GBytes, i.e., 8 GBytes/core
In addition, our group owns a small inhouse InfiniBand connected Intel cluster of 26 nodes, each containing 2 quad(hexa/deca)core Intel cpus (i.e. total of 328 cores).