After two days packed with intensive lectures, workshops, and valuable networking, OpenFest 2025 will culminate with its traditional After-Party! We invite you to join us and celebrate the successful edition of the festival in an informal, musical atmosphere. Final Event Details The party will take place on Sunday, October 19, 2025. Start Time: We kick […]

OpenFest 2025 builds upon its commitment to the principles of ESG (Environmental, Social, and Governance). We believe that responsibility towards the community and the planet is ours. Here are the measures we are taking and how every visitor and volunteer can get involved in creating a more sustainable festival: 1. Environmental Responsibility (E) 🌳 Our […]

This year, OpenFest is once again giving everyone a chance to take the stage with a Lightning Talk! These are brief, 5-minute presentations that offer you the opportunity to share your project, discovery, or idea with the wider community. Registration and Deadlines: How to Sign Up: You can register for a Lightning Talk at the […]

             Milestone Systems is a leading provider of data-driven video technology software. Our portfolio comprises XProtect video management software, Arcules video surveillance as a service, and BriefCam analytics. We amplify what organizations of any size can see, do and achieve with video.  Our video technology empowers people, businesses and societies; […]

             StorPool Storage is among the sponsors who are with us for another consecutive year, in line with its goal to support the Bulgarian open-source community. You will have the opportunity to meet their team and talk to them at the company booth during the conference. About StorPool Storage StorPool […]

             Telelink Business Services is a Bulgarian-owned technology service provider, a leader in the Balkans, offering tailor-made IT solutions that serve multiple workloads in both private and public sectors. Founded in 2001, Telelink Business Services operates in 11 countries with Sofia as its headquarters, over 300 clients and a workforce of […]

           Grafana Labs delivers the open observability cloud, helping builders everywhere turn signals into action. We were founded on the principles of open source, open standards, open ecosystems, and open culture. Grafana Cloud, our fully managed observability platform, is flexible and built for scale, helping organizations run their software better, accelerate […]

            EGT Digital is more than an iGaming provider – we’re a global tech company with 1000+ professionals creating platforms, games, sportsbook and payment systems that set the pace of the industry. This year we’re a Silver Partner at OpenFest 2025. Why? Because we believe in sharing knowledge, building communities and […]

            Studio Raketa builds systems that adapt without breaking. We write Elixir and Ruby code that evolves cleanly over time, avoiding the constant rewrites that plague many projects. At Open Fest, we’re connecting with developers who value sustainable engineering over hype cycles and believe good technical decisions create space to build […]

       HackSoft is a Bulgarian software company that offers end-to-end solutions for businesses in Europe and the USA. The team combines technical expertise and skills in communication, business analysis and technological decision-making. In other words, HackSoft is your development partner beyond code! HackSoft started its journey as part of the HackBulgaria family in […]

To ensure your stay during OpenFest 2025 (October 18 and 19) is as comfortable and productive as possible, we have gathered the most important information regarding the amenities and logistics of the event at Sofia Tech Park. Food and Drinks Dining Options – “Arabiya” For a quick and delicious bite during breaks, food will be […]

This year, OpenFest 2025 introduces its first-ever Mystery Box – a special offer for all fans who love surprises! Each box contains: 👕 T-shirt from a previous OpenFest edition – You will receive a shirt in your selected size and cut (unisex or women’s). However, the edition and color of the T-shirt remain a mystery […]

OpenFest 2025 on October 18 and 19 is approaching, and the OpenFest team is once again providing the option for pre-ordering this year’s T-shirts and other items from the merch collection. This option guarantees that you will receive your desired size and color. How to Reserve and Collect Your T-Shirt Pre-ordering: To secure your T-shirt, […]

The Festival of Free Knowledge, OpenFest 2025, now has its complete program for October 18 and 19 at the John Atanasoff Forum in Sofia Tech Park. This year, the event offers a unique mix of topics that go beyond traditional programming, focusing on legislative, social, and technical challenges. View the full program here! Focus: Legislation, […]

Are you ready to be a part of the OpenFest 2025 program? This festival is special because our community – you – get to choose which lectures and workshops will happen! Voting is now open! Check out all the proposals at vote.openfest.org and show us which talks and workshops you would most like to attend. […]

Are you ready to leave your mark on the world of open technologies? Join the OpenFest 2025 sponsor family—an event that doesn’t just bring people together, but connects visionaries and drivers of change. This year, the magic will happen on October 18 and 19 at the “John Atanasoff” forum in Sofia Tech Park. OpenFest is […]

Last Chance for Submissions for OpenFest 2025! We were flooded with submissions today, and our servers almost overheated! 😅 Because of the incredible interest and requests from many of you, we’ve decided to give you a little more time. We are extending the deadline for the CFP until September 20, 2025! If you’re one of […]

Want to be part of the magic at OpenFest 2025? We’re looking for enthusiastic volunteers to help us make this year’s event the best one yet! On October 18th and 19th, Sofia Tech Park will be the place to be, and we’d love for you to join our crew. Why volunteer with us? Become part […]

We have great news for everyone who wants to participate in the OpenFest 2025 program as a speaker, workshop organizer, or with their own booth. Due to the great interest and numerous inquiries, we are extending the deadline for submitting proposals until September 15, 2025! This is your chance to become part of the biggest […]

Join the OpenFest 2025 team as a volunteer and become a part of the event that brings together thousands of enthusiasts! On October 18th and 19th, Sofia Tech Park will transform into a stage for innovation, lectures, and unforgettable meetings. And you can be at the center of the action! Why should you volunteer? Meet […]

We are delighted to announce that our beloved festival for free software, open source, knowledge, and art – OpenFest 2025 – will be held on October 18th and 19th, 2025! Once again, we will be together at the “John Atanasoff” Forum in Sofia Tech Park. For over 20 years, OpenFest’s goal has been: to promote […]