Fortran

CEA computes the equilibrium composition of mixtures via free-energy minimization, and uses the resulting product concentrations to determine thermodynamic and transport properties. It includes a large database of species with thermodynamic curve-fit data, and can be used for rocket performance, detonation parameters, and shock-wave analysis.

This is the repository for reltrans, the X-ray reverberation black hole model family.

Fortran mimetic abstraction language

Main repository for the Adaptive Mesh Refinement code RAMSES. The code is written in F90 and uses the MPI library.

a pseudo-2D stellar evolution code with rotation, modern microphysics, and starspots

Soil and Water Assessment Tool +

Utility scripts and programs for VASP calculations

Thermodynamic Equations of State, Fortran library with both automatic and anallytical derivation capabilities

A collaborative effort to consolidate expert knowledge on code guidelines for the correctness, modernization, security, portability, and optimization of code written in Fortran, C, and C++ programming languages

This repository contains the source files of CalculiX, a three-dimensional Finite Element Program (www.calculix.de).

OpenRadioss is a powerful, industry-proven finite element solver for dynamic event analysis

Exascale multiphase flow solver — 2025 Gordon Bell Prize Finalist | 200T grid points on 43K+ GPUs

Source, test set, and document for Molecular Dynamics software, GENESIS.

A deep learning library for use in high-performance computing applications in modern Fortran

Official git repository of Elmer FEM software

The Common Land Model

Tomofast-x is a 3D parallel inversion platform to run single domain or joint inversion of gravity and magnetic data.

Orbital transfer and automatic multi-reference calculation for quantum chemistry

Public Fortran90 code package for generating ideal-gas opacity tables

A parallel runtime library for Fortran compilers

The official repository for the Weather Research and Forecasting (WRF) model

Fortran Standard Library

Collection of builder repositories for BinaryBuilder.jl

Modules for Experiments in Stellar Astrophysics

NPI Ephemeris Propagation Tool with Uncertainty Extrapolation

Particle-in-cell code for plasma physics simulations

Semiempirical Extended Tight-Binding Program Package

Quantum chemistry and solid state physics software package

Interface between JEDI and FV3 based models

A solver for the coupled and decoupled electron and phonon Boltzmann transport equations.

The Earth System Modeling Framework (ESMF) is a suite of software tools for developing high-performance, multi-component Earth science modeling applications.

Fortran Package Manager (fpm)

Main repository for the NREL-supported OpenFAST whole-turbine and FAST.Farm wind farm simulation codes.

The GFDL atmos_cubed_sphere dynamical core code

Unstructured Compressible Navier Stokes 3D code (UCNS3D)

Silam model code (mirror of internal FMI svn repo). Main SILAM web site:

MCFOST radiative transfer code

USGS Modular Hydrologic Model

NUOPC Community Mediator for Earth Prediction Systems

TOML parser implementation for data serialization and deserialization in Fortran

Molecular Orbital PACkage

NWChem: Open Source High-Performance Computational Chemistry

ICTP Regional Climate Model

Mirror of the Quantum ESPRESSO repository. Please do not post Issues or pull requests here. Use gitlab.com/QEF/q-e instead.

The official OpenMolcas repository is at https://gitlab.com/Molcas/OpenMolcas, this is only a mirror. OpenMolcas is a quantum chemistry software package. The key feature of OpenMolcas is the multiconfigurational approach to the electronic structure.

FLEXI: A high order discontinuous Galerkin framework for hyperbolic–parabolic conservation laws

WAVEWATCH III

Public version of PolyChord: See polychord.co.uk for PolyChordPro