Pathways to Enable Secure Open-Source Ecosystems (PESOSE)

Opportunity details

Agency

U — S. National Science Foundation

Notice type

Federal Grant

Original posted

February 19, 2026

Last updated

October 30, 2026

Notice ID

grant-361333

Summary

The Pathways to Enable Secure Open-Source Ecosystems (PESOSE) program supports the translation of open-source science and engineering-focused research products into safe and sustainable ecosystems that address national and societal challenges. Open-source tools such as software, hardware, machine learning models, languages, and data platforms are designed to be shared as they are publicly-accessible and modifiable. These tools spark innovation in critical fields as varied as artificial intelligence (AI) and cloud computing, banking, healthcare, research, education, next-gen manufacturing, mobility, and National security (including cybersecurity).

Summary fields are from official SAM.gov or Grants.gov structured data. CaptureIQ does not republish full solicitation or grant text.

Eligibility

*Who May Submit Proposals: Proposals may only be submitted by the following: -For-profit organizations: U.S.-based commercial organizations, including small businesses, with strong capabilities in scientific or engineering research or education and a passion for innovation. -Non-profit, non-academic organizations: Independent museums, observatories, research laboratories, professional societies and similar organizations located in the U.S. that are directly associated with educational or research activities. -Other Federal Agencies and Federally Funded Research and Development Centers (FFRDCs): Prospective proposers from other Federal Agencies and FFRDCs, including NSF sponsored FFRDCs, must follow the guidance in PAPPG Chapter I.E.2 regarding limitations on eligibility. -State and Local Governments -Institutions of Higher Education (IHEs): Two- and four-year IHEs (including community colleges) accredited in, and having a campus located in the US, acting on behalf of their faculty members. Special Instructions for International Branch Campuses of US IHEs: If the proposal includes funding to be provided to an international branch campus of a US institution of higher education (including through use of sub-awards and consultant arrangements), the proposer must explain the benefit(s) to the project of performance at the international branch campus, and justify why the project activities cannot be performed at the US campus. -Tribal Nations: An American Indian or Alaska Native tribe, band, nation, pueblo, village, or community that the Secretary of the Interior acknowledges as a federally recognized tribe pursuant to the Federally Recognized Indian Tribe List Act of 1994, 25 U.S.C. §§ 5130-5131.

*Who May Serve as PI: For Institutions of Higher Education (IHEs): By the submission deadline, any PI, co-PI, or other Senior/Key Personnel must hold either:

a tenured or tenure-track position, or a primary, full-time, paid appointment in a research or teaching position, or a staff leadership role in an Open-Source Program Office or equivalent position

at a U.S.-based campus of an Institution of Higher Education (see above), with exceptions granted for family or medical leave, as determined by the submitting institution. Individuals with primary appointments at overseas branch campuses of U.S. institutions of higher education are not eligible. Researchers from foreign academic institutions who contribute essential expertise to the project may participate as Senior/Key Personnel or collaborators but may not receive NSF support. For all other eligible proposing organizations: The PI must be an employee of the proposing organization who is normally resident in the U.S. and must be acting as an employee of the proposing organization while performing PI responsibilities. The PI may perform the PI responsibilities while temporarily out of the U.S. Individuals with primary appointments at non-U.S. based non-profit or non-U.S. based for-profit organizations are not eligible.

Eligible applicant categories

• Others (see text field entitled "Additional Information on Eligibility" for clarification)

Official Grants.gov eligibility information. Listed categories are not a determination that an organization qualifies.

Funding and program

Assistance Listing

47.041

Funding instrument

Grant

Cost sharing

Not required

Estimated total program funding

40,000,000

Expected number of awards

60 (government estimate, not a guaranteed count)

Official modification date

October 6, 2026

Official Funding Information

Estimated total program funding is the government figure for the whole program, not an individual award ceiling. The expected number of awards is a government estimate, not a guaranteed count. These figures are estimates, not guaranteed funding. The funding-information link is the stored Grants.gov reference, not an application submission URL.

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