About Us

NumPy is an open source project that enables numerical computing with Python. It was created in 2005 building on the early work of the Numeric and Numarray libraries. NumPy will always be 100% open source software and free for all to use. It is released under the liberal terms of the modified BSD license.

NumPy is developed in the open on GitHub, through the consensus of the NumPy and wider scientific Python community. For more information on our governance approach, please see our Governance Document.

Steering Council#

The NumPy Steering Council is the project’s governing body. Its role is to ensure, through working with and serving the broader NumPy community, the long-term sustainability of the project, both as a software package and community. The NumPy Steering Council currently consists of the following members (in alphabetical order, by last name):

  • Sebastian Berg
  • Ralf Gommers
  • Charles Harris
  • Stephan Hoyer
  • Inessa Pawson
  • Matti Picus
  • Stéfan van der Walt
  • Melissa Weber Mendonça
  • Eric Wieser


  • Alex Griffing (2015-2017)
  • Allan Haldane (2015-2021)
  • Marten van Kerkwijk (2017-2019)
  • Travis Oliphant (project founder, 2005-2012)
  • Nathaniel Smith (2012-2021)
  • Julian Taylor (2013-2021)
  • Jaime Fernández del Río (2014-2021)
  • Pauli Virtanen (2008-2021)

To contact the NumPy Steering Council, please email [email protected].


The NumPy project leadership is actively working on diversifying contribution pathways to the project.
NumPy currently has the following teams:

  • development
  • documentation
  • triage
  • website
  • survey
  • translations
  • sprint mentors
  • optimization
  • funding and grants

See the Team page for more info.

NumFOCUS Subcommittee#

  • Charles Harris
  • Ralf Gommers
  • Inessa Pawson
  • Sebastian Berg
  • External member: Thomas Caswell


NumPy receives direct funding from the following sources:

Institutional Partners#

Institutional Partners are organizations that support the project by employing people that contribute to NumPy as part of their job. Current Institutional Partners include:

  • UC Berkeley (Stéfan van der Walt)
  • Quansight (Nathan Goldbaum, Ralf Gommers, Matti Picus, Melissa Weber Mendonça)
  • NVIDIA (Sebastian Berg)

If you have found NumPy useful in your work, research, or company, please consider a donation to the project commensurate with your resources. Any amount helps! All donations will be used strictly to fund the development of NumPy’s open source software, documentation, and community.

NumPy is a Sponsored Project of NumFOCUS, a 501(c)(3) nonprofit charity in the United States. NumFOCUS provides NumPy with fiscal, legal, and administrative support to help ensure the health and sustainability of the project. Visit numfocus.org for more information.

Donations to NumPy are managed by NumFOCUS. For donors in the United States, your gift is tax-deductible to the extent provided by law. As with any donation, you should consult with your tax advisor about your particular tax situation.

NumPy’s Steering Council will make the decisions on how to best use any funds received. Technical and infrastructure priorities are documented on the NumPy Roadmap.

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