Project Summary
FreeON is an experimental, open source (GPL) suite of programs for linear scaling quantum chemistry. It is highly modular, and has been written from scratch for N-scaling SCF theory in Fortran95 and C. Platform independent I/O is supported with HDF5. FreeON should compile with most modern Linux distributions and OS X. FreeON performs Hartree-Fock, pure Density Functional, and hybrid HF/DFT calculations (e.g. B3LYP) in a Cartesian-Gaussian LCAO basis. All algorithms are O(N) or O(N log N) for non-metallic systems. Periodic boundary conditions in 1, 2 and 3 dimensions have been implemented through the Lorentz field (Γ-point), and an internal coordinate geometry optimizer allows full (atom+cell) relaxation using analytic derivatives. Effective core potentials for energies and forces have been
In a Nutshell, FreeON...
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took an estimated 280 years of effort (COCOMO model)
starting with its first commit in October, 2000
ending with its most recent commit over 6 years ago
Quick Reference
GNU General Public License v3.0 or later
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These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
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30 Day SummarySep 2 2023 — Oct 2 2023
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12 Month SummaryOct 2 2022 — Oct 2 2023
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