NumFOCUS Sponsored Projects

Public

Projects sponsored by NumFOCUS, a nonprofit supporting open source scientific computing. NumFOCUS provides fiscal sponsorship and governance support to some of the most important projects in data science and scientific computing. These projects represent the backbone of modern research software infrastructure used by millions of researchers worldwide. This portfolio includes projects across multiple domains: - Core numerical computing (NumPy, SciPy) - Data manipulation and analysis (pandas, xarray) - Visualization (Matplotlib, Bokeh) - Machine learning (scikit-learn, PyTorch) - Scientific domains (Astropy, Biopython) - Infrastructure (Conda, Jupyter) Together, these projects enable reproducible research and accelerate scientific discovery.

Created 2/20/2026 - Last updated 7/28/2026

Projects

1.1M commits

81.0K

Recognition

64.6K citing papers · 32 canonical works

1.8M

Reach

13.1K external users · 2616.7M downloads

Repositories at risk

19% of 79 evaluated · 64 healthy · 1 unverified

Without canonical credit

of 80 · 28% have detected canonical

370 unwrapped

Metadata coverage

repo → publication funnel

Projects in this portfolio80100%

with any publication linkage3341%

with canonical paper detected2228%

distinct canonical works2633%

canonical

mentions

paper

Of 80 projects in this portfolio, 47 (59%) have no detected publication linkage of any kind. These gaps are part of the story — software metadata in the wild is often missing.

Top recognized work

see all →

Most-cited publications representing software in this portfolio — the academic credit going to these projects. Items marked "detection gap" are likely portfolio software whose canonical link our pipeline failed to record.

1.
Matplotlib: A 2D Graphics Environment
37,869 citations · 10.1109/mcse.2007.55
2.
Array programming with NumPy
detection gap
20,849 citations · should be canonical for numpy · 10.1038/s41586-020-2649-2
3.
scikit-image: image processing in Python
6,689 citations · 10.7717/peerj.453
4.
Julia: A Fresh Approach to Numerical Computing
6,011 citations · 10.1137/141000671
5.
pandas-dev/pandas: Pandas
1,690 citations · 10.5281/zenodo.3509134
6.
xarray: N-D labeled Arrays and Datasets in Python
1,589 citations · 10.5334/jors.148
7.
SymPy: symbolic computing in Python
1,573 citations · 10.7717/peerj-cs.103
8.
PyMC: a modern, and comprehensive probabilistic programming framework in Python
698 citations · 10.7717/peerj-cs.1516
9.
ArviZ a unified library for exploratory analysis of Bayesian models in Python
617 citations · 10.21105/joss.01143
10.
PyTorch 2: Faster Machine Learning Through Dynamic Python Bytecode Transformation and Graph Compilation
514 citations · 10.1145/3620665.3640366

External foundational dependencies

Upstream tools the portfolio depends on whose home repos are not in this portfolio. The citation counts here belong to the cited work — they show what these projects are built on, not what this portfolio is cited for.

1.
Data Structures for Statistical Computing in Python
10,787 citations · used by 1 repo · 10.25080/majora-92bf1922-00a
2.
Vega-Lite: A Grammar of Interactive Graphics
788 citations · used by 1 repo · 10.1109/tvcg.2016.2599030
3.
stringr: Simple, Consistent Wrappers for Common String Operations
651 citations · used by 1 repo · 10.32614/cran.package.stringr
4.
ITK: enabling reproducible research and open science
371 citations · used by 1 repo · 10.3389/fninf.2014.00013
5.
purrr: Functional Programming Tools
319 citations · used by 1 repo · 10.32614/cran.package.purrr
6.
knitr: A General-Purpose Package for Dynamic Report Generation in R
283 citations · used by 1 repo · 10.32614/cran.package.knitr
7.
readr: Read Rectangular Text Data
271 citations · used by 1 repo · 10.32614/cran.package.readr
8.
Altair: Interactive Statistical Visualizations for Python
227 citations · used by 1 repo · 10.21105/joss.01057
9.
rmarkdown: Dynamic Documents for R
219 citations · used by 1 repo · 10.32614/cran.package.rmarkdown
10.
TORMES: an automated pipeline for whole bacterial genome analysis
148 citations · used by 1 repo · 10.1093/bioinformatics/btz220

People & places

Bridge contributors

2,472

people contribute to 2+ projects in this portfolio · 41% of all contributors

Top citing institutions

Centre National de la Recherche Scientifique(FR)3,430
California Institute of Technology(US)1,343
University of Oxford(GB)1,286
University of Cambridge(GB)1,245
Center for Astrophysics Harvard & Smithsonian(US)1,236

Explore Full Interactive Graph

Impact

81.0K

Total Citations

64.6K

Citing Papers

Linked Publications

55.7K

Software Dependents

189.0K

Citing Authors

16.5K

Citing Institutions

Physics and Astronomy

Top Citing Field

	Portfolio	Citing
Domains	4	4
Fields	14	26
Subfields	36	242
Topics	70	3481

Explore

Dependencies

47.1K

Total Dependencies

Ecosystems

282

Research SW Links

536

Hidden Found

Ecosystem	Packages
pypi	21191
actions	9287
conda	8252
npm	2816

Explore

Community

222 items at risk — review sustainability

6.3K

Total People

Retention Rate

28.3%

Intl. Collaboration

9 pubs · 213 repos

At Risk

	Pubs	Repos
Core	21	...
Active	9	5971
Bus Factor	-	1

Explore

MCP Ecosystem

370 entities have no MCP wrapper — potential funding gaps

370

Unwrapped Entities

386

Portfolio Entities

125

Wrapping Servers

96%

Gap Rate

Explore