• Functional Fortran - Functional programming for modern Fortran.

Libraries for graphing, graphics, and GUIs

• DISLIN - a high-level graphing and user-interface library.
• f90gl - public domain implementation of the official NIST Fortran 90 bindings for OpenGL.
• F03GL - a Fortran 2003 interface to the OpenGL library, along with the GLU and GLUT toolkits.
• gtk-fortran - a cross-platform library to build Graphical User Interfaces (GUI) using GTK+. Very useful when combined with the Glade RAD tool.
• PGPLOT - cross-platform scientific graphing library.
• VTKFortran - Pure Fortran (2003+) library to write and read data conforming the VTK standard.

Libraries for calculating and other mathematical operations.

• BLAS - application programming interface standard for publishing libraries to perform basic linear algebra operations such as vector and matrix multiplication.
• CERNLIB - The CERN Program Library is a large collection of general purpose libraries and modules maintained and offered in both source and object code form on the CERN central computers
• EISPACK - a software library for numerical computation of eigenvalues and eigenvectors of matrices, written in FORTRAN
• FGSL - portable, object-based Fortran interface to the GNU scientific library
• IMSL - The IMSL Fortran Numerical Library is the standard for high performance computing commercial mathematics and statistics libraries
• Lis - a Library of Iterative Solvers for Linear Systems
• NAG Fortran Library - Produced by experts for use in a variety of applications, the NAG Fortran Library has a global reputation for its excellence and, with hundreds of fully documented and tested routines, is the largest collection of mathematical and statistical algorithms available
• netCDF - a set of software libraries and self-describing, machine-independent data formats that support the creation, access, and sharing of array-oriented scientific data.
• OpenBLAS - one of the fastest open source BLAS libraries available. Almost as fast as Intel MKL.

Libraries for JSON data manipulating with Fortran language.

• FSON - Fortran 95 JSON Parser.
• json-fortran - A Fortran 2008 JSON API.

Libraries for XML data manipulating with Fortran language.

• fox - Fortran XML library
• xml-fortran - an all-Fortran solution for reading and writing XML files.

Libraries for date and time manipulation with Fortran language.

• datetime-fortran - A Fortran 2003 date and time manipulation library, modeled after Python's datetime library.

Libraries for testing codebases and generating test data.

• FRUIT - FORTRAN Unit Test Framework, written in FORTRAN 95
• Ftunit - Fortran unit testing framework by Arjen Markus
• pFUnit - Unit testing framework for Fortran with MPI extensions by developers from NASA and NGC TASC. Uses parallel codes and object-oriented design.
• Vegetables - For a healthier code base, eat your vegetables

Libraries for encoding and decoding data with Fortran language.

• BeFoR64 - Base64 encoding/decoding library for FoRtran poor men. A KISS library for base64 encoding/decoding for modern (2003+) Fortran projects.

Libraries for enabling codes portability.

• PENF - Pure Fortran (2003+) library for ensuring codes portability.

Libraries for parsing command-line and building user interfaces.

• FLAP - Fortran command Line Arguments Parser for poor men. A KISS library for building easily nice Command Line Interfaces (CLI) for modern (2003+) Fortran projects.
• options.f90 - Options & input processing for modern Fortran.

Libraries for compiling and building Fortran projects.

• FoBiS - Fortran Building System for poor men. A KISS tool for automatic building modern Fortran projects.

Libraries for conditional-compilation, macros for code simplification, and inclusion of additional source files, templating systems.

• Blockit/PyF95++ - A fairly simple Python framework used to block parse your code (or any text file) into nested blocks. The BlockIt framework has already been used to create a templating capability for the Fortran 95/2003 language along with some language extensions.
• PreForM - Preprocessor for Fortran poor Men.

Tools for formatting and style-checking Fortran source code.

• ffmt - Fast, configurable Fortran formatter with support for Fypp, Doxygen, and OpenACC/OpenMP directives. Written in Rust, installable via pip.

Libraries for building documentation.

• FORD - An automatic documentation generator for modern Fortran programs.

Libraries for CFD computations

• MFC - Exascale multiphase compressible flow solver with GPU acceleration via OpenACC. 2025 Gordon Bell Prize Finalist.
• OFF - Open source Finite volume Fluid dynamics code.

• Unoficial Image - docker image provided by @baekjoon

• Fortran Machine - An MVC web stack written in Fortran 90

Resources

Various resources, such as books, websites and articles, for improving your Fortran development skills and knowledge.

• The Fortran Company - A home page of FORTRAN programming language.
• Fortran Dev - Fortran development blog.
• Fortran WIKI - An open venue for discussing all aspects of the Fortran programming language and scientific computing.

• GNU FORTRAN Lesson 1 - Videos about the Fortran programming language.

Other Awesome Lists

Other amazingly awesome lists can be found in the awesome-awesomeness list.

Contributing

Your contributions are always welcome! Please submit a pull request or create an issue to add a new framework, library or software to the list. Do not submit a project, which hasn't been updated in the past 6 months or is not awesome.