Brussels / 4 & 5 February 2023



FOSDEM would not be possible without the generous help of our sponsors. Thank you very much!

If you are interested in sponsoring FOSDEM, send us an email at or see our contact page for more information.

While FOSDEM is primarily funded by sponsors and the sale of t-shirts, we also gratefully accept voluntary donations. See our donations page for more information.

Cornerstone sponsor


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 has supported open source communities by bringing new contributors into the ecosystem through Google Summer of Code since 2005.

For more information, visit

Google supports the event financially.

Main sponsors

(in alphabetical order)


Cisco enables people to make powerful connections - whether in business, education, philanthropy, or creativity. Cisco hardware, software, and service offerings are used to create the Internet solutions that make networks possible - providing easy access to information anywhere, at any time.

Cisco was founded in 1984 by a small group of computer scientists from Stanford University. Since the company’s inception, Cisco engineers have been leaders in the development of Internet Protocol (IP)-based networking technologies.

Today, with more than 67,000 employees worldwide, this tradition of innovation continues with industry-leading products and solutions in the company’s core development areas of routing and switching, as well as in advanced technologies such as Application Networking, Data Center, Digital Media, IPICS, Mobility, Security, Storage Networking, TelePresence, Unified Communications, Video and Virtualization

Cisco provides all of our WLAN hardware and helps us setting up the wireless network.


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.


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.


ISC is a non-profit that develops software and offers services in support of the Internet infrastructure. We believe that open source protects the Internet from being overtaken by businesses or governments who may not have the world’s interests at heart. It is essential for individuals and organizations to have open source options for their critical Internet functions.

ISC develops and distributes three open source Internet networking software packages: BIND 9, ISC DHCP, and Kea DHCP. In addition to our open source software, ISC also operates critical Internet infrastructure in the form of the F-Root server, one of the 13 Internet root name servers that power the global Internet. ISC’s work is supported by the sale of software support contracts, keeping us focused on the needs of our users.

ISC supports the event financially.


First released in 2008, OpenNebula has become the only European open source technology for cloud-edge orchestration and management, supporting both virtual machines and Kubernetes clusters. OpenNebula Systems was born in 2010 in order to provide professional support to corporate users and sustain the development of the project in the long term. With more than 5,000 organizations running an OpenNebula cloud worldwide, OpenNebula Systems helps organizations from many different sectors to adopt a vendor-neutral, multi-provider approach for building their private, public, and hybrid clouds.

OpenNebula Systems is headquartered in Madrid (Spain) but became a full-remote company in 2021, hosting a growing, global team of open source enthusiasts. Apart from being a corporate member of the Linux Foundation, the CNCF, and Gaia-X, OpenNebula Systems plays a key role in shaping Europe’s next-generation edge cloud, chairing the Cloud/Edge Working Group of the “European Alliance for Industrial Data, Edge and Cloud” while coordinating the actions and EU-funded projects launched by the SovereignEdge.EU initiative. For more information, visit

OpenNebula supports the event financially.

The Linux Foundation & Cloud Native Computing Foundation

The Cloud Native Computing Foundation (CNCF) is an open source software foundation dedicated to making cloud native computing universal and sustainable. Cloud native computing uses an open source software stack to deploy applications as microservices, packaging each part into its own container, and dynamically orchestrating those containers to optimize resource utilization. We host and nurture components of cloud native software stacks, including Kubernetes, Envoy and Prometheus.

The Cloud Native Computing Foundation (CNCF) supports the event financially.

Université Libre de Bruxelles

The Université Libre de Bruxelles (or ULB) is a French-speaking university in Brussels, Belgium. It has about 20,000 students.

The ULB very substantially supports the event by providing us with the location as well as infrastructure on-site.