Open Source Security Foundation
OpenSSF project that funds security work on critical open-source projects, foundations, and ecosystem services that use an OSI-approved license. Applications follow a four-quarter seasonal calendar: submissions in January, April, July, and October, then a month of co-design and a month of decision and disbursement. Recipients publish monthly reports and join monthly strategy roundtables. A March 2026 coalition investment of $12.5 million is managed with OpenSSF; Alpha-Omega reports more than 70 grants totaling over $20 million.
- Status
- Active
- How to apply
- In rounds
National Institutes of Health
NIH PAR-27-024 funds late-stage optimization and sustainable dissemination of research technologies and software via the RM1 mechanism. Recurring receipt dates run through 2029: 29 Sep 2026, 28 Jan 2027, 28 May 2027, 28 Jan 2028, 26 May 2028, and 29 Jan 2029.
- Status
- Active
- How to apply
- In rounds
IBM Call for Code
Annual global challenge mobilizing developers to build AI solutions to urgent global issues (climate, public health, justice/human rights), run with UN Human Rights and The Linux Foundation. Winning solutions are recognized at the United Nations and supported through deployment in communities worldwide.
- Status
- Active
- How to apply
- In rounds
Internet Society
The Internet Society Foundation's Common Good Cyber Fund supports nonprofits that maintain public-interest cybersecurity infrastructure and protect vulnerable or high-risk communities. The 2026 call will award at least $3.5 million through two-year operating grants.
- Status
- Active
- How to apply
- In rounds
eBPF Foundation
The eBPF Foundation's Academic Research Grant Program funds academic research benefiting the eBPF community. It awarded five $50,000 grants in 2024, and its 2026 cycle accepted applications from June 15 through July 15 for awards up to $50,000; submissions are now under review.
- Status
- Active
- How to apply
- In rounds
FreeCAD Project Association
Quarterly grants (EUR 1,500-5,000, EUR 40,000 reserved for 2026) to accelerate FreeCAD development, prioritizing documentation, testing, release-cycle work, and ecosystem infrastructure.
- Status
- Active
- How to apply
- In rounds
Free and Open Source Software Sustainability Fund
OTF's fund for the sustainability of free and open source software used for internet freedom, making targeted awards (from $7k/month up to $400k over 24 months) for maintenance, interoperability, security, and resilience of FOSS tools. Awards run through a two-stage competitive process (concept note, then proposal with advisory council review) as deliverable-based performance contracts; supported projects include F-Droid, DEfO, and Mailvelope, and an application round ran March-May 2026.
- Status
- Active
- How to apply
- In rounds
National Institutes of Health
NIH ITCR RFA-CA-27-019 funds early-stage open-source informatics tools for cancer research via the U01 mechanism. The solicitation has four receipt dates: 1 Jul 2026, 19 Oct 2026, 11 Jun 2027, and 19 Oct 2027.
- Status
- Active
- How to apply
- In rounds
Linux Foundation
Event registration scholarships that award a complimentary pass to people who could not otherwise attend Linux Foundation events. Reviewers select from two tracks: applicants from traditionally underrepresented or marginalized groups, and active open-source community members who cannot get employer funding. Recipients may receive up to two scholarships per calendar year; travel is a separate Travel Fund application.
- Status
- Active
- How to apply
- In rounds
Linux Foundation
Standing travel fund for open-source developers and community members who could not otherwise attend Linux Foundation events, with emphasis on historically underrepresented groups and people of lower socioeconomic status. Approved support covers coach airfare, ground transport to and from the airport, and lodging for the event dates plus one prior night. Applications are submitted from the LF Individual Dashboard; each event sets its own deadline.
- Status
- Active
- How to apply
- In rounds
Mozilla Foundation
Mozilla Foundation Incubator funds values-driven technology projects with coaching and mentorship. The 2025 Making the invisible visible cohort and the 2026 Democracy x AI cohort are underway. Democracy x AI applications closed 16 March 2026. No new cohort is open.
- Status
- Active
- How to apply
- In rounds
NLnet Foundation
NLnet provides grants of €5,000 to €50,000 for free and open-source software, hardware, data, and standards. Open calls are paused through the Open Internet Stack transition. New calls open 3 September 2026 and close 3 November 2026 at 12:00 CEST. Later deadlines fall on the third day of every odd month.
- Status
- Active
- How to apply
- In rounds
Nominet
Nominet's DNS Fund funds open-source DNS projects and maintainers to improve security, sustainability, and resilience of critical internet infrastructure. The 2026 call closed on August 17, 2026. Nominet is taking alerts for the next invitation.
- Status
- Active
- How to apply
- In rounds
National Science Foundation
NSF PESOSE invites proposals to translate open-source research into sustainable, secure ecosystems that address national and societal needs — scoping, establishing, and improving the safety, security, and privacy of open-source projects. Full proposals are due the first Tuesday in September and the first Tuesday in March, annually. Total program funding is approximately $40 million.
- Status
- Active
- How to apply
- In rounds
Software Freedom Conservancy
Outreachy is a paid open-source internship program (administered with Software Freedom Conservancy support) offering $7,000 USD stipends, running two rounds a year. December 2026 initial applications are open from 24 August to 31 August 2026 at 16:00 UTC. Internships run 7 December 2026 to 8 March 2027.
- Status
- Active
- How to apply
- In rounds
Python Software Foundation
Nomination-based honorary recognition for people who have made significant contributions to the Python community. The Fellow Work Group reviews nominations each quarter. The Q3 2026 cutoff was August 20. Q4 nominations open in October and close November 20, 2026.
- Status
- Active
- How to apply
- In rounds
Linux Foundation
Annual Linux Foundation Education scholarship that awards free training courses and a certification exam to increase diversity in open source. The 2026 round selected more than 500 recipients from 123 countries across 16 categories after more than 5,900 applications; more than 4,250 scholarships have been awarded since 2010. The 2027 cycle opens in April 2027.
- Status
- Active
- How to apply
- In rounds
Sovereign Tech Agency
Flexible direct support (freelance or employment contracts) for maintainers, community managers, and technical writers doing critical open-source work.
- Status
- Active
- How to apply
- In rounds