Trending Fortran repositories on GitHub — ranked by total activity score (stars, forks, pushes, PRs) over the past month.
🔥 Trending Fortran Repos — 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.
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
Exascale multiphase flow solver — 2025 Gordon Bell Prize Finalist | 200T grid points on 43K+ GPUs
High Order Hex-Quad Mesh (HOHQMesh) package to automatically generate all-quadrilateral meshes with high order boundary information.
Tomofast-x is a 3D parallel inversion platform to run single domain or joint inversion of gravity and magnetic data.
The official repository for the Weather Research and Forecasting (WRF) model
HORSES3D: A high-order discontinuous Galerkin solver for flow simulations and multi-physics applications
PRIMA is a package for solving general nonlinear optimization problems without using derivatives. It provides the reference implementation for Powell's derivative-free optimization methods, i.e., COBYLA, UOBYQA, NEWUOA, BOBYQA, and LINCOA. PRIMA means Reference Implementation for Powell's methods with Modernization and Amelioration, P for Powell.
Düsseldorf Advanced Material Simulation Kit (Read-only mirror)
Main repository for the NREL-supported OpenFAST whole-turbine and FAST.Farm wind farm simulation codes.
Mirror of the Quantum ESPRESSO repository. Please do not post Issues or pull requests here. Use gitlab.com/QEF/q-e instead.
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.
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.
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.
FLEXI: A high order discontinuous Galerkin framework for hyperbolic–parabolic conservation laws
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.