2025 Congress


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)