OSS + ELC EU 2026

ValkeyConf is a day for anyone running Valkey in production, and those seriously thinking about it. Developers, SREs, DBAs, and DevOps pros come together to talk shop, share hard-won knowledge, and connect with the people building Valkey’s future. Sessions, lightning talks, and plenty of time for real conversation. If you care about where Valkey goes next, this is where it happens.
To learn more, visit the event website.
How to Register: Pre-registration is required. Register for ValkeyConf as a stand alone event or add it to your Open Source Summit Europe registration. 30 Euro (only in-person reg).

Observability Summit brings together developers, operators, and business leaders who are shaping the future of open source observability. From deep-dives to hands-on workshops, every moment is curated by the community, for the community! This event will be focused on real challenges, practical solutions, and innovations driving the next era of visibility and control. This is a must attend event to help you build, scale and succeed.
To learn more, visit the event website.
How to Register: Pre-registration is required. Register for Observability Summit Europe as a stand alone event or add it to your Open Source Summit Europe registration.

OpenSSF Community Day brings together a vibrant community from across the Security and Open Source ecosystems to share ideas and progress on capabilities that make it easier to sustainably secure the development, maintenance, and consumption of the software on which we all depend. These events, held regionally and co-located Open Source Summits, offer an opportunity to engage with the brightest minds in security for a day of collaboration and innovation in software security best practices. As a home for tools, standards, and education, OpenSSF provides attendees the chance to explore these resources, share their experiences, and contribute to a safer and more secure digital world.
To learn more, visit the event website.
How to Register: Pre-registration is required. Register for OpenSSF Community Day Europe as a stand alone event or add it to your Open Source Summit Europe registration. 20 Euro (only in-person reg).

Calling all Valkey contributors, maintainers, product leaders, and community builders! Join us for the annual Valkey Contributor Summit: a community-led forum of builders who actively shape the direction of this fast-growing open source project. Together, we’ll share ideas, discuss priorities, and plan the future of Valkey.
To learn more, visit the event website.
How to Register: Pre-registration is required. Register for Valkey Contributor Summit as a stand alone event.

Get ready for Yocto Project Developer Day 2026 in Prague! This one-day presentation and hands-on training day puts you in direct contact with Yocto Project technical experts and developers. Come learn about creating, customizing, and optimizing Linux distributions for embedded devices using the rich features, tools, and content of Yocto Project. You’ll come away with a deeper understanding on topics like build system workflow, embedded security, working with containers, building applications, optimizing images, hardening your devices, and leveraging tools like devtool.
To learn more, visit the event website. CFP submissions are available now and will close on August 11. Submit a CFP!

The Linux Foundation Member European Forum is an annual regional gathering for Linux Foundation European members interested in discussing and shaping how European organisations participate in the global technology commons.

How to Register: Participation is by invitation only. If you are interested in attending, please submit a request for an invitation. All requests will be reviewed, and you will receive an email notification once a decision has been made.

Linux Security Summit (LSS) is a technical forum for collaboration between Linux developers, researchers, and end users with the primary aim of fostering community efforts to analyze and solve Linux security challenges.
LSS is where key Linux security community members and maintainers gather to present their work and discuss research with peers, joined by those who wish to keep up with the latest in Linux security development and who would like to provide input to the development process.
To learn more, visit the event website.
How to Register: Register for Linux Security Summit Europe as a stand alone event or add it to your Open Source Summit Europe registration.