Bash Scrips
 rename.sh rename files, usage: rename.sh gif jpeg
 ubusy.sh unmount busy file system, usage: ubusy.sh /mnt/cdrom
 psmall.sh resize and change names
to images in a directory, usage: psmall.sh
~/myphoto  sxw2txt.sh convert an OpenOffice
file to a text file, usage: sxw2txt.sh
mydoc.sxw  make_short.sh convert a ps file to one with for pages per sheet (by L. Stella), usage:make_short.sh filename
 latex2png.sh convert a latex formula in a png image, usage:latex2png.sh formula_filename resolution
Molecular Dynamics Utilities
 autocorr.f90 evaluate autocorrelation function with error
 makefcc.f90 generate a fcc lattice for a squared simulation box
 makebcc.f90 generate a bcc lattice for a squared simulation box
 pot_ewald.tgz C++ class for simple Ewald sums
TightBinding
 spnnsi.f90 A simple sp3 nearest neighbors tightbinding code for Silicon
 sp3d5s.tgz A sp3d5s* tightbinding code for Silicon that use the parameters of Phys. Rev. B 69 115201
 sp3_3nn.tgz A sp3 third nearest neighbors tightbinding code for Silicon (Phys. Rev. B 62 5109). This package includes the files to calculate the density of states and the dielectric constant of Silicon.
Scripts for Abinit
 makexyz.tgz Make xyz file from the abinit input file
Quantum Monte Carlo
 Qumax a Quantum Monte Carlo Software for molecular systems
2D Electron Gas
 LSD2D.f90 Correlation Energy and Spin Polarization in the 2D Electron Gas Int. J. Quantum Chem. 91, 126 (2003) and Phys. Rev. Lett. 88, 256601 (2002)
C and C++ codes
 MyLapack A very simple interface for BLAS and LAPACK. Vectors and matrices are objects with the possibility of bonding check. Compatible with ATLAS ,ACML and MKL.
 debug.h A simple function to perform tracing and debugging of C and C++ programs in a elegant way.
Php
 Publications parser A simple php parser for the data produced by “ISI Web of Science”. It can be used to create an easy to update publication list for groups or entire institutes.
Fortran and Fortran 90 codes
 mathvec.tgz A very simple interface for ACML Fast Vector Math and MKL Vector Mathematical Functions.
Python scripts

Ordinary differential equations integrators (Euler, 2nd and 4th order RungeKutta): rk2and4.py