Sponsors and Partners

FOSDEM is a free event for software developers to meet, share ideas and collaborate. Every year, thousands of developers of free and open source software from all over the world gather at the event in Brussels.

Grafana Labs is the company behind the world’s most popular open source observability projects, including Grafana, Loki, Mimir, and Tempo. With more than 25 million users, Grafana Labs helps builders everywhere monitor and understand their systems through open and composable observability tools. At Grafana Labs, open is the strategy — open source, open standards, open data, and open minds. The company’s approach is grounded in helping users get real value from their telemetry. Built around Grafana — the leading open source dashboarding and visualization technology — the LGTM Stack (Loki for logs, Grafana for visualization, Tempo for traces, and Mimir for metrics) brings full-stack observability together in a way that’s scalable, vendor-neutral, and community-driven. Grafana Labs is backed by leading investors Lightspeed Venture Partners, Lead Edge Capital, GIC, Sequoia Capital, Coatue, J.P. Morgan, and CapitalG.

Follow Grafana Labs on LinkedIn and Twitter or visit grafana.com.

StorPool is an entirely Bulgarian company that develops its own software-defined storage product used by dozens of companies around the world. The unique software solution helps large corporations, cloud builders, SaaS vendors, MSPs, hosting and cloud providers to provide fast and reliable services to their customers.

StorPool is one of the few Bulgarian companies that have successfully developed from a startup to a global storage vendor whose product is recognizable worldwide.The company was founded in 2011 and continues to grow rapidly. Its main mission is to continue to provide a quality product that delivers value to the market as well as to compete successfully with global market leaders.

StorPool’s belief is that there is a team of exceptional people behind every innovation and successful product. The intelligence and hard work of its team are the main driving force and they are the reason for the success of the company. They are the engine that drives it to continuous growth, provides an even better product and strengthens its position in the global market for storage solutions.

CAFFITALY – ITALIAN COFFEE WITH CHARACTER!
Premium coffee beans, a wide variety of capsules, and professional coffee machines.
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Schwarz Digits is the IT and digital division of Schwarz Group and offers impressive digital products and services that meet the high Europe data protection standards. With the aim of achieving the greatest possible digital sovereignty, Schwarz Digits provides the IT infrastructure and solutions for the extensive ecosystem of Schwarz Group’s companies and develops it for the future. Schwarz Digits’ sovereign core services include Cloud, Cyber Security, Data and AI, Communication and Workspace. In addition, Schwarz Digits creates optimal conditions for the development of trend-setting innovations for end customers, companies and public sector organizations.

init Lab is a Hackerspace in Sofia, a place to gather different people with hacker ways of thinking and interesting ideas.

E-Card is a Bulgarian technology company with over 25 years of experience in developing software solutions and digital products. Over the years, the company has been behind a number of innovative projects for the Bulgarian market, including Bulgaria’s first online maps and the first interactive TV game.

Today, E-Card continues to build on its technological expertise by creating comprehensive software solutions, online platforms, real-time systems, and original digital games for the international iGaming market.

We combine cutting-edge technologies, creative product design, and in-depth knowledge of various markets to create distinctive products and digital experiences. We believe in the power of innovation, out-of-the-box thinking, and technologies that open up new possibilities.

Linux Professional Institute (LPI) is the global certification standard and career support organization for open source professionals. With more than 250,000 certification holders, it’s the world’s first and largest vendor-neutral Linux and open source certification body. LPI has certified professionals in almost 190 countries, delivers exams in multiple languages, and has more than 700 training partners all over the world. LPI professional certifications  LPIC-1, LPI-2 and LPIC-3 are among 10 Top Linux Certifications 2023.
LPI’s mission is to promote the use of open source by supporting the people who work with it.

TUES is a secondary school, established in 1988, in the structure of a university, the teaching staff including professors from universities and academic communities. Currently, the school is ranked second in the capital and is, perhaps, the most desirable professional school in Bulgaria.

TUES offers the environment of continuity between older and younger students, and the IT business in Bulgaria is built by graduates of the school, who currently hold management positions at IT companies. Part of the students who graduated from the school are involved in the teaching activity. They want to help the younger generation and give them the opportunity to develop, which they have also received. The TUES Alumni Association is the link between the business and the school. We support the extracurricular activities of the school and, in addition to the hackathon and the open day, we have other initiatives that aim to give additional knowledge and skills on topics that the students recognize from the business side.

Waracle is a UK-based digital technology consultancy that creates digital products trusted by millions of people worldwide.

Since 2008, Waracle has been helping ambitious organisations across Financial Services, Energy, Healthcare, and the Public Sector solve complex challenges through strategy, design, engineering, data, and AI.

In 2025, Waracle expanded into Bulgaria by acquiring HackSoft, establishing its Sofia office and reaffirming its long-term commitment to the Bulgarian tech ecosystem. Today, the Bulgarian team continues to grow, playing an important role in delivering world-class digital products while actively contributing to the local tech community.

“V.I.P. Catering Service” is a professional catering, equipment, and decoration company. While we possess a solid track record, we never stop evolving and experimenting. We have a wealth of experience in successfully organizing a wide range of events. Our team of young professionals provides comprehensive, top-tier service—whether for a cocktail party, business seminar, conference, coffee break, or presentation.

The Faculty Students’ Council at the Faculty of Mathematics and Informatics (FMI) was established on 01.XII.1999 and is one of the pioneers in student organizations at the faculty level. The foundation of the Students’ Council was prompted by the need to protect and represent the interests of students and doctoral students at FMI in front of university structures such as management, administration, etc. The members of the FSC represent the students in the FMI General Assembly (the local analogue of the Sofia University General Assembly), where we account for 18 to 20% of all members of the assembly. The main goal of the Faculty Students’ Council is to build an environment of mutual assistance between students.