FreeType is a freely available software library to render fonts. It is written in C, designed to be small, efficient, highly customizable, and portable while capable of producing high-quality output (glyph images) of most vector and bitmap font formats.

Availability and Restrictions


The following versions of FreeType are available on OSC clusters:


Cairo is a 2D graphics library with support for multiple output devices. It is designed to produce consistent output on all output media while taking advantage of display hardware acceleration when available.

Availability and Restrictions


The following versions of Cairo are available on OSC clusters:

GNU Compilers

Fortran, C and C++ compilers produced by the GNU Project. 

Availability and Restrictions

GNU Compiler is available on Ruby and Oakley Clusters. The versions currently available at OSC are:


CDO (Climate Data Operators) is a collection of command line operator to manipulate and analyse climate and NWP model data. It is open source and released under the terms of the GNU General Public License v2 (GPL).

Availability and Restrictions


CDO is available on Oakley Cluster. The versions currently available at OSC are:


NCL (The NCAR Command Language), is a free interpreted language designed specifically for scientific data processing and visualization. It is a product of the Computational & Information Systems Laboratory at the National Center for Atmospheric Research (NCAR) and sponsored by the National Science Foundation. NCL has robust file input and output: it can read and write netCDF-3, netCDF-4 classic, HDF4, binary, and ASCII data, and read HDF-EOS2, GRIB1, and GRIB2.

Parallel netCDF

PnetCDF is a library providing high-performance parallel I/O while still maintaining file-format compatibility with  Unidata's NetCDF, specifically the formats of CDF-1 and CDF-2. Although NetCDF supports parallel I/O starting from version 4, the files must be in HDF5 format. PnetCDF is currently the only choice for carrying out parallel I/O on files that are in classic formats (CDF-1 and 2). In addition, PnetCDF supports the CDF-5 file format, an extension of CDF-2, that supports more data types and allows users to define large dimensions, attributes, and variables (>2B elements).


Q-Chem is a general purpose ab initio electronic structure program. Its latest version emphasizes Self-Consistent Field, especially Density Functional Theory, post Hartree-Fock, and innovative algorithms for fast performance and reduced scaling calculations. Geometry optimizations, vibrational frequencies, thermodynamic properties, and solution modeling are available.


Boost is a set of C++ libraries that provide helpful data structures and numerous support functions in a wide range of aspects of programming, such as, image processing, gpu programming, concurrent programming, along with many algorithms.  Boost is portable and performs well on a wide variety of platforms.


SIESTA is both a method and its computer program implementation, to perform efficient electronic structure calculations and ab initio molecular dynamics simulations of molecules and solids. More information can be found from here.


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