Trending Fortran repositories on GitHub — ranked by total activity score (stars, forks, pushes, PRs) over the past month.
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.
Multi-GPU code for intreface-resolved simulations of multiphase turbulence (triply periodic box and channel). DNS of Navier-Stokes equations coupled with a phase-field method (ACDI) for interface description. The cuDecomp library is used for parallelization.
a pseudo-2D stellar evolution code with rotation, modern microphysics, and starspots
Thermodynamic Equations of State, Fortran library with both automatic and anallytical derivation capabilities
Abaqus/Standard user element subroutine (UEL) for small strain isotropic linear elastostatics using standard displacement formulation.
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
OpenRadioss is a powerful, industry-proven finite element solver for dynamic event analysis
A deep learning library for use in high-performance computing applications in modern Fortran
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
Exascale multiphase flow solver — 2025 Gordon Bell Prize Finalist | 200T grid points on 43K+ GPUs
HORSES3D: A high-order discontinuous Galerkin solver for flow simulations and multi-physics applications
Main repository for the NREL-supported OpenFAST whole-turbine and FAST.Farm wind farm simulation codes.
Düsseldorf Advanced Material Simulation Kit (Read-only mirror)
Mirror of the Quantum ESPRESSO repository. Please do not post Issues or pull requests here. Use gitlab.com/QEF/q-e instead.
The official repository for the Weather Research and Forecasting (WRF) model
The Earth System Modeling Framework (ESMF) is a suite of software tools for developing high-performance, multi-component Earth science modeling applications.
Flatiron Institute Fast Multipole Libraries --- This codebase is a set of libraries to compute N-body interactions governed by the Laplace and Helmholtz equations, to a specified precision, in three dimensions, on a multi-core shared-memory machine.
PICLas is a parallel, three-dimensional PIC-DSMC solver developed cooperatively by the Institute of Space Systems, Institute of Aerodynamics and Gas Dynamics at the University of Stuttgart and the spin-off boltzplatz. PICLas is a flexible particle-based plasma simulation suite.
(REOS) Radar and ElectroOptical Simulation Framework written in Fortran.
ADflow is a finite volume RANS solver tailored for gradient-based aerodynamic design optimization.
An easy to follow library to make Fortran easier in general with wrapped interfaces, sorting routines, kD-Trees, and other algorithms to handle scientific data and concepts. The library contains core fortran routines and object-oriented classes.
The home of the McStas (neutrons) and McXtrace (x-rays) Monte-Carlo ray-tracing instrument simulation codes.
