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Tag: Fortran

Chemistry

Quantum ESPRESSO – electronic-structure and materials modelling suite

October 2, 2026 Steve Emms CLI, Scientific

Quantum ESPRESSO is a suite for electronic-structure calculations and materials modelling using density-functional theory, plane waves and pseudopotentials.

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Chemistry

OpenMolcas – multiconfigurational quantum chemistry package

October 2, 2026 Steve Emms CLI, Scientific

OpenMolcas is a quantum chemistry package centred on multiconfigurational electronic-structure methods including CASSCF and CASPT2.

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Chemistry

MOPAC – semiempirical quantum chemistry package

October 1, 2026 Steve Emms CLI, Scientific

MOPAC is a semiempirical quantum chemistry package for fast molecular and materials calculations, geometry optimisation and reaction studies.

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Chemistry

DFTB+ – fast quantum mechanical atomistic simulations

May 5, 2026 Steve Emms Scientific

DFTB+ performs fast electronic-structure calculations for molecules and periodic materials, including dynamics, transport and solvation.

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Developer of the Week

Developer of the Week: Matthew Forrester Wolffe

March 22, 2026 Steve Emms Blog

Matthew Forrester Wolffe has one of those GitHub profiles that immediately caught my attention.

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Images of shells by the sea

fortsh – shell written in Fortran

March 11, 2026 Steve Emms CLI, Utilities

fortsh is an experimental POSIX-compatible command shell written in modern Fortran.

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Data Science

DAMASK – Düsseldorf Advanced Material Simulation Kit

January 25, 2026 Steve Emms Scientific

DAMASK is a unified multiphysics crystal plasticity simulation package.

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fpm – Fortran Package Manager

January 17, 2026 Steve Emms Programming, Utilities

Fortran Package Manager is a package manager and build system for Fortran. It aims to improve the user experience of Fortran programmers.

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Linux

fortty – terminal emulator

December 26, 2025 Steve Emms GUI, Productivity, Utilities

fortty is a new GPU-accelerated terminal emulator.

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Git Clients

fuss – quick staging dirty git files

December 24, 2025 Steve Emms CLI, Programming

fuss is an interactive tree utility for complete git workflows, written in modern Fortran.

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Selection of utilities

ferp – grep clone

December 18, 2025 Steve Emms CLI, Utilities

ferp aims to be a clone of grep, but written in modern Fortran.

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Image of Files

Fortress – file explorer with git niceties

December 9, 2025 Steve Emms CLI, Productivity, TUI, Utilities

Fortress is a command-line file explorer written in modern Fortran with fzf integration and git binds for fast staging and committing.

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Best Free and Open Source Compact Editors

facsimile – terminal text editor

November 30, 2025 Steve Emms Documents, TUI

facsimile is a terminal text editor written in Fortran. It offers VSCode-style keybindings.

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fortbite – command-line calculator

October 19, 2025 Steve Emms CLI, Productivity

fortbite is a command-line calculator written in Fortran that handles arbitrary precision arithmetic, complex numbers, and matrices.

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WSJT-X is designed for weak-signal digital communication by amateur radio

June 22, 2025 Steve Emms GUI, Other

WSJT-X implements amateur radio communication protocols or “modes” called FT4, FT8, JT4, JT9, JT65, QRA64, ISCAT, MSK144, and WSPR

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ParaView – post-processing visualization engine

November 15, 2024 Steve Emms Graphics

ParaView is a scientific data visualisation application with interactive 3D analysis, advanced filters, Python scripting and animations.

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3D Illustration

McXtrace – Monte Carlo Xray Tracing

November 5, 2023 Steve Emms Graphics

McXtrace is a general Monte Carlo ray-tracing software for simulation X-ray beamlines and experiments.

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Octopus – scientific program aimed at the ab initio virtual experimentation

October 15, 2023 Steve Emms Scientific

Octopus is a free and open source computer package aimed at the simulation of the electron-ion dynamics of finite systems.

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Elmer – multiphysical simulation software

October 15, 2023 Steve Emms Scientific

Elmer is a very mature multiphysical simulation software with development starting in 1995.

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Chemistry

Orac – OpenMP/MPI molecular dynamics engine

October 15, 2023 Steve Emms Scientific

Orac simulates solvated biomolecules using molecular dynamics, with replica exchange, metadynamics and parallel enhanced sampling.

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