Pathways to Enable Secure Open-Source Ecosystems (PESOSE)

PESOSE supports the translation of science and engineering research products into safe, sustainable open-source ecosystems with strong governance, broad communities, and security practices.

U.S. National Science Foundation (NSF) lists this opportunity for Research Team, STEM, United States. Applicants should use the official call page to confirm final requirements before submitting.

Applicants must follow NSF solicitation NSF 26-506 and PAPPG requirements.

Teams may propose planning, ecosystem establishment, or safety/security enhancement tracks.

Institutional and PI eligibility are detailed in the NSF solicitation.

Open-source software, hardware, models, languages, data platforms, and related ecosystems.

Governance, sustainability, distributed development, user communities, safety, security, and privacy.

NSF expects 40 to 60 awards; Track 1 awards may be up to USD 300,000, and Tracks 2 and 3 may be up to USD 1.5 million.

Application deadline: Sep 1, 2026.

Confirm the exact deadline time, time zone, and submission route on the official call page.

Plan internal approvals, partner confirmations, budgets, letters, and portal submission before the final deadline.

Submit through NSF systems by 1 September 2026 at 5:00 p.m. local time of the submitting organization.

Before submitting, check required documents, eligible costs, attachments, page limits, institutional approvals, and whether the opportunity uses an expression of interest, full proposal, registration, or nomination stage.