About
The 2025 edition of Open Source Congress was held in Brussels, Belgium on September 16-17, 2025. The host organization was the Eclipse Foundation.
Sessions
Tuesday, September 16
09:00 – 09:15
Welcome Keynote
Mike Milinkovich (Eclipse Foundation), Ruth Suehle (Apache Software Foundation)
09:15 – 10:30
Open Source in a Polarized World: International Collaboration
Xiaoming Cheng (OpenAtom Foundation), Mike Dohan (Linux Foundation), Mike Milinkovich (Eclipse Foundation), Ciaran O’Riordan (Open Forum Europe), Jennifer Tridgell (University of Cambridge)
11:00 – 12:15
Cybersecurity & Regulatory Compliance
Deb Bryant (Open Source Initiative), Madalin Neag (NLnet Foundation), Mikael Barbero (Eclipse Foundation), Michael Winser (Alpha-Omega / OpenSSF), Amreen Taneja (Digital Public Goods Alliance)
13:15 – 14:30
Sustaining Open Source: Funding, Stewardship & Incentives
Ruth Suehle (Apache Software Foundation), Tobie Langel (OpenJS Foundation), Deb Nicholson (Python Software Foundation), Astor Calberg (OpenForum Europe), Omar Mohsine (United Nations)
14:30 – 15:45
Policy, Regulation & the Role of Open Source Stewards
Katie Steen-James (Open Source Initiative), Ciaran O’Riordan (Open Forum Europe)
16:15 – 17:15
Toward a Secretariat: Coordinating the Open Source Ecosystem
Simon Phipps (Open Source Initiative)
Wednesday, September 17 – Stakeholders’ Day
09:15 – 10:30
International Collaboration in Practice
Jennifer Tridgell (University of Cambridge), Benjamin Bögel (European Commission), Bart Hanssens (Belgian Government)
11:00 – 12:15
Security & Compliance: From Principles to Implementation
Deb Bryant (Open Source Initiative), Amreen Taneja (Digital Public Goods Alliance), Filipe Moura (TODO Group), Roman Zhukov (OpenSSF)
13:15 – 14:30
Sustaining Open Source at Scale
Ruth Suehle (Apache Software Foundation), Tobie Langel (Open Regulatory Compliance Working Group), Rolf Riemenschneider (European Commission), Sebastian Raible (APELL)
14:30 – 15:45
Policy & Advocacy: Aligning Open Source and Governments
Katie Steen-James (Open Source Initiative), Ciaran O’Riordan (OpenForum Europe), Tommaso Bernabò (European Commission), Felix Reda (GitHub)
