CFOUR (Coupled-Cluster techniques for Computational Chemistry) is a program package for performing high-level quantum chemical calculations on atoms and molecules.

Molecular electronic-structure program with extensive functionality for calculations of molecular properties at the HF, DFT, MCSCF, MC-srDFT, and CC levels of theory.

The DIRAC program computes molecular properties using relativistic quantum chemical methods.

The General Atomic and Molecular Electronic Structure System (GAMESS) is a general ab initio quantum chemistry package.

Gaussian is a popular quantum chemistry software package.

Gaussview is a graphic interface for the Gaussian software.

There are NBO functions that come with the Gaussian program. However, there is also an add on package to Gaussian that installs extended NBO functionality. Both are available at the Alabama Supercomputer Center.

NWChem aims to provide its users with computational chemistry tools that are scalable both in their ability to treat large scientific computational chemistry problems efficiently, and in their use of available parallel computing resources from high-performance parallel supercomputers to conventional workstation clusters.