Pathways to Enable Secure Open-Source Ecosystems (PESOSE)
Open. Closes March 2, 2027, 131 days from October 22, 2026, as posted on Grants.gov. Posted by U.S. National Science Foundation, opportunity number 26-506.
Get a first draft in your own AI assistant
Free, no account. Add CedarGrant to Claude, then paste this into a new chat. Your assistant reads the official notice, asks you a few questions and writes a first draft in the notice's format.
Use CedarGrant to help me apply for Pathways to Enable Secure Open-Source Ecosystems (PESOSE) (26-506): https://simpler.grants.gov/opportunity/361333
Already writing? Paste this instead, with your draft attached:
Use CedarGrant to make a Requirements Map and run a Reviewer Panel on my draft for 26-506.
Notice facts
| Agency | U.S. National Science Foundation |
|---|---|
| Opportunity number | 26-506 |
| Assistance listing | 47.041, 47.049, 47.050, 47.074, 47.075, 47.076, 47.084 |
| Funding instrument | Grant |
| Category | Science and Technology and other Research and Development |
| Posted | February 19, 2026 |
| Closes | March 2, 2027 |
| Award range | Not stated |
| Expected number of awards | 60 |
| Total program funding | $40,000,000 |
| Cost sharing or matching | Not required, per the notice |
| Applicant types listed | Others (see the notice's eligibility text) |
| Additional eligibility information | From the notice: *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… |
| Where to apply | Check the notice for where and how to submit. |
As posted on Grants.gov, checked October 21, 2026. CedarGrant lists what the notice states; it does not judge whether an organization is eligible. The official notice and its modifications control.
Summary from the notice
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,…
Official notice and documents
- No files are attached on Grants.gov. The full text is on the official page.
Similar open grants
| Closes | Grant | Agency | Award range |
|---|---|---|---|
| November 3, 2026 12 days left | Geometric Analysis | U.S. National Science Foundation | Not stated |
| November 3, 2026 12 days left | Topology | U.S. National Science Foundation | Not stated |
| November 4, 2026 13 days left | NSF Small Business Innovation Research / Small Business Technology Transfer Phase I, Phase II, Fast-Track Programs: A Pilot Emphasis on Scientific Instrumentation | U.S. National Science Foundation | Not stated |
| November 4, 2026 13 days left | U.S. National Science Foundation State and Regional Artificial Intelligence Infrastructure Hubs: | U.S. National Science Foundation | Not stated |
| November 4, 2026 13 days left | Unlocking Dataset Value for AI-Enabled Scientific Discovery (AI Datasets) | U.S. National Science Foundation | Not stated |