The MolSSI QCArchive Project: An Open-Source Platform to Compute, Organize, and Share Quantum Chemistry Data

05 March 2020, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


The Molecular Sciences Software Institute's (MolSSI) Quantum Chemistry Archive (QCArchive) project is an umbrella name that covers both a central server hosted by MolSSI for community data and the Python-based software infrastructure that powers automated computation and storage of quantum chemistry results.
The MolSSI-hosted central server provides the computational molecular sciences community a location to freely access tens of millions of quantum chemistry computations for machine learning, methodology assessment, force-field fitting, and more through a Python interface.
Facile, user-friendly mining of the centrally archived quantum chemical data also can be achieved through web applications found at
The software infrastructure can be used as a standalone platform to compute, structure, and distribute hundreds of millions of quantum chemistry computations for individuals or groups of researchers at any scale.
The QCArchive Infrastructure is open-source (BSD-3C), code repositories can be found at, and releases can be downloaded via PyPI and Conda.


database resource
Distributed computing
Open Source Workflow Management System
Jupyter notebook
software layer
Github Projects

Supplementary weblinks


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