Original PythTB: Tight-binding python package
Original PythTB, developed and mantained by Sinisa Coh (University of California at Riverside), David Vanderbilt (Rutgers University) and others.
In this version it can be used to construct and solve tight-binding models of the electronic structure of systems of arbitrary dimensionality (crystals, slabs, ribbons, clusters, etc.), and is rich with features for computing Berry phases and related properties.
Requeriments
You will need to have Numpy and Matplotlib installed. On a Unix/Linux/Mac system, you may be able to install these using your Package Manager.
More information
For more details about the package, please see: http://www.physics.rutgers.edu/pythtb/.