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@openforcefield

Open Force Field Initiative

An open source, open science, and open data approach to better force fields

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  1. openff-toolkit openff-toolkit Public

    The Open Forcefield Toolkit provides implementations of the SMIRNOFF format, parameterization engine, and other tools. Documentation available at http://open-forcefield-toolkit.readthedocs.io

    Python 382 102

  2. openff-forcefields openff-forcefields Public

    Force fields produced by the Open Force Field Initiative

    Python 179 26

  3. openff-bespokefit openff-bespokefit Public

    Automated tools for the generation of bespoke SMIRNOFF format parameters for individual molecules.

    Python 72 12

  4. openff-interchange openff-interchange Public

    A project (and object) for storing, manipulating, and converting molecular mechanics data.

    Python 88 24

  5. openff-evaluator openff-evaluator Public

    A physical property evaluation toolkit from the Open Forcefield Consortium.

    Python 58 21

  6. openff-recharge openff-recharge Public

    An automated framework for generating optimized partial charges for molecules

    Python 40 7

Repositories

Showing 10 of 94 repositories
  • openff-evaluator Public

    A physical property evaluation toolkit from the Open Forcefield Consortium.

    openforcefield/openff-evaluator’s past year of commit activity
    Python 58 MIT 21 59 (1 issue needs help) 11 Updated Feb 24, 2026
  • openff-interchange Public

    A project (and object) for storing, manipulating, and converting molecular mechanics data.

    openforcefield/openff-interchange’s past year of commit activity
    Python 88 MIT 24 98 (8 issues need help) 12 Updated Feb 24, 2026
  • openff-toolkit Public

    The Open Forcefield Toolkit provides implementations of the SMIRNOFF format, parameterization engine, and other tools. Documentation available at http://open-forcefield-toolkit.readthedocs.io

    openforcefield/openff-toolkit’s past year of commit activity
    Python 382 MIT 102 258 (1 issue needs help) 4 Updated Feb 24, 2026
  • dimsim Public

    Distributed simulation

    openforcefield/dimsim’s past year of commit activity
    Python 1 MIT 0 27 3 Updated Feb 24, 2026
  • openforcefield/2026-virtual-workshops’s past year of commit activity
    Jupyter Notebook 1 MIT 0 0 0 Updated Feb 23, 2026
  • yammbs Public

    Internal tool for benchmarking force fields

    openforcefield/yammbs’s past year of commit activity
    Jupyter Notebook 6 MIT 2 23 7 Updated Feb 23, 2026
  • openff-packmol Public

    A Packmol wrapper using OpenFF objects

    openforcefield/openff-packmol’s past year of commit activity
    Python 0 MIT 0 3 1 Updated Feb 23, 2026
  • openff-qcsubmit Public

    Automated tools for submitting molecules to QCFractal

    openforcefield/openff-qcsubmit’s past year of commit activity
    Python 27 MIT 6 46 5 Updated Feb 23, 2026
  • descent Public

    Optimize classical force field parameters against reference data

    openforcefield/descent’s past year of commit activity
    Python 9 MIT 5 3 4 Updated Feb 23, 2026
  • smee Public

    Differentiably evaluate energies using SMIRNOFF force fields

    openforcefield/smee’s past year of commit activity
    Python 19 MIT 8 4 3 Updated Feb 23, 2026

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