Top 50 Open Source Conferences in 2026
The top 50+ Open Source conferences of 2026 that the Open Source Initiative (OSI) is tracking, including events that intersect with AI, cloud, cybersecurity, and policy.
Events
Events and recaps.
Open Source Without Borders: Reflections from COSCon’25
Witnessing China’s Deepseek moment firsthand and learning about Kaiyuanshe’s dedication for over a decade building and championing China’s Open Source community with such vision and commitment is truly inspiring.
DPGA’s Annual Members Meeting: Advancing Open Source & DPGs for the Public Good
The DPGA’s Annual Members Meeting highlighted several priorities that resonate strongly with OSI’s mission, including promoting Open Source software, advancing public-interest AI, and strengthening global collaboration.
OFA Symposium 2025 and the Launch of the Open Technology Research Network (OTRN)
The OpenForum Academy Symposium 2025 organized by OpenForum Europe (OFE) brought together researchers, policymakers, practitioners, and open technology leaders for two days of deep inquiry into how open technologies shape our economies, infrastructures, and societies.
State of the Source at ATO 2025: State of the “Open” AI
The OSI hosted the State of the Source Track at ATO. Gabriel Toscano from Duke University led the State of the “Open” AI session, unpacking what it really means when models call themselves open.
State of the Source at ATO 2025: AI and Data Governance
The OSI hosted the State of the Source Track at ATO. Katie Steen-James and Nick Vidal participated in a fireside chat (Policy: AI / Data Governance) to discuss the latest AI and data governance policy developments.
State of the Source at ATO 2025: Cybersecurity
The OSI hosted the State of the Source Track at ATO. Katie Steen-James, Jeremy Stanley, Barry Peddycord III, and Bob Callaway led the panel Policy Cybersecurity, with updates on SBOMs, the Cyber Resilience Act, and what developers need to know.
State of the Source at ATO 2025: Sustaining the Open Source Ecosystem
The OSI hosted the State of the Source Track at ATO. Ruth Suehle, Patrick Masson, Amir Montazery, and Duane O’Brien organized the panel Beyond the Bottom Line: Sustaining the Open Source Ecosystem, exploring real-world approaches to Sustaining Open Source, from new funding models to global procurement policies.
State of the Source at ATO 2025: Licensing 201
The OSI hosted the State of the Source Track at ATO. Pamela Chestek, emeritus OSI Board member, opened the track with Licensing 201, an advanced but practical look at how licenses get approved and why the right choice matters for community health.
Open Source Congress 2025 and Stakeholder Day: building a global agenda for Open Source
On 16–17 September 2025, leaders from across the Open Source ecosystem gathered in Brussels for the third annual Open Source Congress (OSC), followed by the companion Stakeholder Day. Each year, the Congress has provided an intimate forum for foundations and ecosystem leaders to exchange views on the global forces shaping open collaboration.
Report from OSS EU 2025 and AI_dev: What’s next for OSAID
At this year’s Open Source Summit EU (OSS EU 2025) and AI_dev EU 2025, Stefano Maffulli, Executive Director of OSI, and Jordan Maris, OSI’s EU Policy Analyst, presented a summary of 10 months since the release of the Open Source AI Definition v1.0.
Building digital public goods: Reflections from UN Open Source Week 2025
The UN’s Open Source Week in NYC brought people together from around the world to discuss the promise of Open Source and how it can be leveraged to build sustainable digital public goods and infrastructure. The week included side events focused on openness and AI and two full days at the UN dedicated to Open Source Program Offices (OSPOs) and Digital Public Infrastructure.