Dates for the next call will be announced here and through the OCX and Eclipse Foundation community newsletter. Everything below explains what we look for and how the process works, so you can prepare a proposal in the meantime.
Anyone active in open source: developers, maintainers, researchers, companies, policymakers and community members. First-time speakers are welcome, and every proposal is read.




OCX is a vendor neutral event. Sessions are not sales pitches, and the speaker agreement makes that a condition: no promotional material and no lead collection during a talk.
You choose a format when you submit. Lengths run from 15 minutes to an hour depending on type.
A talk to a room, the standard format across every track.
Longer and hands-on, for teaching something people can take away and use.
An informal, participant-led discussion around a shared problem or project.
More about workshops and Birds of a Feather sessions.
Every edition follows the same four stages. The dates change each year and are published here when the call opens.
1. The call opens.
The call opens. Submissions are accepted from this point. Submit early: early submissions may receive additional visibility during the selection process.
2. Early submission deadline.
An earlier cut-off ahead of the final one, for the same reason.
3. Final submission deadline.
The last point at which proposals are accepted. This deadline is firm, though it has been extended in the past when volume warranted it.
4. Speaker notifications.
Everyone who submitted hears the outcome. Accepted speakers receive guidance on preparing their session.
If you have submitted a proposal, wait until you hear the outcome before you register. Accepted speakers receive a discount code to use at registration.
Each track has its own program committee, made up of volunteers from the Eclipse community. They review every proposal submitted to their track against four criteria:
See who sits on the committees on the program committee page.




Speakers cover their own travel and accommodation. Plan around the venue and see the speaker agreement for the full terms, including consent to being recorded. All speakers also agree to the Code of Conduct.
For anything about submitting or speaking, email speakers@ocxconf.org, or use the contact page
Red Hat is the world’s leading provider of enterprise open source software solutions, using a community-powered approach to deliver reliable and high-performing Linux, hybrid cloud, container, and Kubernetes technologies. Red Hat helps customers develop cloud-native applications, integrate existing and new IT applications, and automate and manage complex environments.
A trusted adviser to the Fortune 500, Red Hat provides award-winning support, training, and consulting services that bring the benefits of open innovation to any industry. Red Hat is a connective hub in a global network of enterprises, partners, and communities, helping organizations grow, transform, and prepare for the digital future.
At ADEPTIC Reply, part of the Reply Group, we are pioneering innovation in the Cloud‑Edge Continuum and next‑generation robotic and autonomous systems orchestration.
We design and deliver advanced architectures that seamlessly connect cloud intelligence with edge autonomy, enabling high‑performance, resilient, and scalable robotic applications.
From distributed orchestration to real‑time decision making on edge devices, we drive the future of robotics and autonomous mobility with cutting‑edge technology and a vision for the next era of intelligent systems.
Adeptic Reply is actively involved in the EU IPCEI-CIS program, with a strong focus on Cloud computing at the edge for data network services. Through close collaboration with key European partners, the company contributes to build a secure, resilient and sovereign intelligent ecosystem, where AI, Cloud and orchestration converge.
Adeptic Reply strongly believes in the value of open communities as key drivers of innovation through collaboration and knowledge sharing.
Follow them on LinkedIn.