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Celebrating maintainers, founders, and the future of Open Source

Members Newsletter – May 2025

May is Maintainer Month—a time to recognize the essential work of those who build, fix, review, and secure the code that the world relies on every day. At OSI, we know maintainers are the heartbeat of Open Source. That’s why we’re lifting up their stories, sharing ways to get involved, and making space to say thank you. If you know a maintainer, take a moment this month to let them know their work matters.

Support for maintainers, developers, and Open Source businesses is all part of the critical work we do at OSI. This month, we’re also proud to sponsor the Open Source Founders Summit, a new gathering for the creators building companies grounded in Open Source principles. Founders play a unique role in shaping the future of the ecosystem—and they deserve support too, from choosing the right license to finding sustainable business models.

Our commitment to this community is outlined in our 2025 roadmap, where we’ve pledged to show up, stand by you, and say clearly: we’ve got your back.

Thank you for being part of this global movement. Whether you’re maintaining a project, launching a startup, or just getting involved, we see you—and we’re here to help.

Stefano Maffulli

Executive Director, OSI 

I hold weekly office hours on Fridays with OSI members: book time if you want to chat about OSI’s activities, if you want to volunteer or have suggestions.

News from the OSI

May is Maintainer Month: Celebrating those who secure Open Source

Maintainer Month returns this May, and the Open Source Initiative (OSI) is proud to join GitHub and a global community of contributors in honoring the individuals who steward and sustain Open Source projects. In 2025, Maintainer Month enters its fifth year with a clear and urgent theme: Securing Open Source.

Other highlights

New project highlights Open Source Initiative and Apereo Foundation’s response to White House on AI

Advance your career and organization with the CODE certification

Join us at the OFA Symposium 2025: Advancing open technology impact in uncertain times

Key insights from the 2025 State of Open Source Report

There are no “Degrees of Open”: why Openness is binary

OSI in the news

Redis ‘returns’ to open source with AGPL license

Article from The Register

Adding the GNU Affero General Public License (AGPL) as an additional licensing option for Redis, starting with Redis 8, the business said it is moving to a licensing model approved as open source by the Open Source Initiative (OSI) – as the Server Side Public License (SSPLv1) it switched to in March last year has remained outside the accepted definition of open source software.

Other highlights

National AI Action plan should expand open-source offerings, respondents say (NextGov)

Open source technology in the age of AI (McKinsey)

Read all press mentions from this past month

Other news

News from OSI affiliates

Eclipse Foundation: Navigating the EU Cyber Resilience Act in a Global Software Supply Chain

GNOME: Steven Deobald is the new Executive Director of the GNOME Foundation

OpenJS Foundation: Meet Our 2025 OpenJS Foundation Board of Directors

Linux Foundation: CNCF and Synadia Align on Securing the Future of the NATS.io Project

Software Heritage: President Macron Highlights Software Heritage at the Sorbonne: A Call for Europe to Embrace its Role in a Global Mission

Open Source Matters (Joomla): Leadership interview Maria Skampoura – President

Drupal: DrupalCon Atlanta 2025: A Celebration of Community, Innovation, and Impact

Debian: Debian Project Leader election 2025 is over, Andreas Tille re-elected!

Open Source Lab: Future of OSL in Jeopardy

The Document Foundation: Celebrating 20 Years of the OASIS Open Document Format (ODF) Standard

Open Invention Network: OIN Celebrates 20 Years

Git: Git turns 20: A Q&A with Linus Torvalds

Survey

The 2025 State of OSPOs and Open Source Management Survey: The TODO Group, the Open Source Initiative and Linux Foundation Education are conducting a survey as part of a research project on the prevalence and outcomes of open source programs and similar open source initiatives operating across the globe.

Events

Upcoming events

PyCon US (May 14-22 – Pittsburgh)

Open Source Founders Summit (May 19-20 – Paris / OSI is a sponsor)

OSI Maintainer Month (May 21 – Online)  

UN Open Source Week (July 16-20 – NYC)

OW2con (June 17-18 – Paris)

Open Source Summit NA (June 23-25 – Denver)

CFPs

Community Over Code (September 11-14 – Minneapolis)

Nerdearla (September 23-27 – Buenos Aires)

Deep Dive: Data Governance  (October 1-3 – Online)

OpenForum Academy (OFA) Symposium 2025 (November 18-19 – Rio de Janeiro)

Thanks to our sponsors

New sponsors and renewals

Microsoft

OpenProject

See all sponsors

Interested in sponsoring, or partnering with, the OSI? Please see our Sponsorship Prospectus and our Annual Report. Please contact the OSI to find out more about how your company can promote open source development, communities and software.

Support OSI by becoming a full member

Let’s build a world where knowledge is freely shared, ideas are nurtured, and innovation knows no bounds!

Join as a full member!

Source: opensource.org