Google believes that open source is good for everyone. By being open and freely available, it enables and encourages collaboration and the development of technology.

Google supports the event financially.

Arm is leader in global semiconductor design and software. Our energy-efficient processor designs and software platforms have enabled advanced computing in more than 270 billion chips to date and are defining the future of computing. Collaboration is at the heart of all we do. With more than 1,000 technology partners, Arm provides a trusted foundation for a vast range of applications, from the sensor to the smartphone and the supercomputer. We support thousands of open-source software projects, enabling more than 15 million developers who target Arm platforms to build, deploy, and manage their projects seamlessly, enabling top performance across the wide spectrum of hardware on Arm.

Arm supports the event financially.

At Block, engineering is at the heart of everything we do. From developing seamless payment solutions to creating new tools for financial inclusion, our engineers are not just building products — they’re shaping the future of financial services and more. Since the founding of the company, open source software has been central to our technology.

Block supports the event financially.

Bloomberg supports the event financially.

Codethink has established an international reputation as a world-class provider of software engineering and consultancy services. Codethink delivers critical, high-performance software projects for international companies in a range of industries. We provide expert teams to help our clients tackle their most challenging software problems.

Codethink supports the event financially.

Colt provides network, voice, and data centre services to thousands of businesses around the world, allowing them to focus on delivering their business goals instead of the underlying infrastructure. Customers include 18 of the top 25 banks and diversified financial groups and 19 out of the top 25 companies in both global media and telecoms industries (Forbes 2000 list, 2014). In addition, Colt works with over 50 exchange venues and 13 European central banks.

Colt operates across Europe, Asia and North America with connections into over 200 cities globally. It completed the acquisition of KVH in 2014, an integrated managed communications and IT infrastructure services business, with headquarters in Tokyo and operations in Hong Kong, Seoul and Singapore.

Colt sponsors an internet uplink at FOSDEM.

We at Dstny are a European leader and innovator in secure cloud communications, based on our powerful UCaaS offer and technology. Over 2 million business users are empowered to communicate, collaborate, and provide excellent customer service with our tools at hand. We enable service providers, partners, and end-users as well as 3rd party services to thrive in our ecosystem. With headquarters in Brussels, we have more than 700 employees in 7 European countries and an annual turnover of close to €190 million in 2021.

Dstny sponsors an internet uplink at FOSDEM.

Element is an open source messaging and collaboration platform.

We give people and organisations back their digital sovereignty by decentralising conversations, letting you host yourself or through a hosting provider such as Element Matrix Services.

Element is built on Matrix - an open network for secure, decentralised communication - for easy connectivity with any of the 44M addressable users on the public Matrix network. Additional privacy is provided by end-to-end encryption, protecting instant messaging, 1:1 voice and video calls, and file sharing.

Element was founded by the team behind Matrix as a way to bring it to the mainstream.

Element provides the chat infrastructure.

Mozilla is the non-profit backed technology company that champions privacy, human dignity, and an open internet. Our mission is to ensure the internet is a global public resource, open and accessible to all.

We have been pioneering stakeholder capitalism in tech for the past 25 years. Our next quarter century will be about continuing to do more, from helping build responsible tech products to growing the community, thanks to new talent that truly cares about making the internet better.

The web should put people first — and be open to everyone, empowering and safe. It should be a place that revels in the independent spirit, allows for connection and community building, and to express yourself in your most authentic way.

That’s why we created Firefox as a faster, more private browser alternative.

Firefox offers a choice in the marketplace — a people-first independent choice. It allows users to be their authentic self online while at the same time supporting an independent, nonprofit-backed browser whose mission is to build a better internet.

Mozilla supports the event financially.