About the conference
OSSFE is the community conference for the software powering fusion research and commercialisation. Over three days in Madison, we’ll share tools, swap ideas across institutions and companies, and grow the open-source ecosystem that the field increasingly depends on, through talks, tutorials, posters and panels.
Fusion is too important to build behind closed doors. OSSFE champions open, reusable, well-tested software, so the whole field can build on each other’s work instead of reinventing it.
From plasma physics and materials to neutronics, tritium and reactor engineering: we bring together the codes and the people pushing fusion energy toward reality.
Researchers, national labs, startups and students in one room. OSSFE is where maintainers meet users, collaborations start, and the next generation finds its footing.
“OSSFE is the most valuable event I ever attended in fusion.”
“I was amazed by the pace and the growth of open-source software for fusion.”
“You are building a long-term community. We can be ambitious, and the community is in good hands.”
“The most valuable outcome for me was seeing a lot of like-minded people in one room.”
“Fantastic event! Thank you so much for organising.”
Key dates
Dates are being finalised: sign up below to get notified the moment the CFP opens.
Call for Proposals
Got a tool, a workflow, or a story the fusion software community should hear? We want to hear from maintainers, researchers, and newcomers alike. Proposals are handled through pretalx.
Share a tool, a result, or a lesson learned with the community.
Hands-on sessions that get people up and running with your software.
Present work in progress and spark hallway conversations.
Opens pretalx.com in a new tab.
Why attend
Whether you write the code, run it, or fund it: OSSFE is where the open-source fusion community comes together.
Multiple tracks running side by side: from plasma codes to neutronics, ML and HPC so there’s always something relevant to you.
Keynotes and invited talks from leaders shaping open-source software across the fusion community.
Roll up your sleeves and learn the tools directly from the people who build and maintain them.
Meet maintainers, researchers, national labs and startups: the connections that turn into collaborations.
Show your work, get feedback, and discover what others across the field are building.
Novice to expert, student to PI, with travel grants and scholarships to help you get there.
Speakers
Our invited speakers and program will be revealed after the Call for Proposals. Want to be on this list? Submit a talk.
Moments
A look back at last year and a taste of what’s coming to Madison in 2027.
One community, one stack
From equilibrium solvers to neutronics, from data pipelines to reactor design frameworks, OSSFE brings together the people who build the tools the field runs on. OSSFE supports the whole stack, not just one project.
Partner with us
Put your brand in front of the open-source fusion community: researchers, national labs and startups, and help sustain the tools the field depends on.
Sponsor line-up coming soon: your logo could be here.
Travel & venue
A vibrant, walkable city on the lakes and a welcoming home for OSSFE 2027. Everything you need to plan your trip will live here.
Discounted room blocks near the venue, booking details coming soon.
Madison (MSN) airport, with Chicago (ORD/MDW) a few hours away by road or rail.
Travelling internationally? We provide invitation letters on request.
Family support, a nursing room and accessible facilities: just ask.
Madison, WisconsinBe part of the open-source fusion community in 2027: present your work, learn from others, and help shape the tools the field depends on.