Sponsors and Partners

If you want to help the biggest Bulgarian conference for Free & Open Source Software, we will be delighted to find a way for you to join this OpenFest and promote you, your company and/or products in a way which is beneficial for you and our visitors.

Please reach us using the contacts below so that we can share more info about how this partnership will be useful:

email: sponsors@openfest.org

Phone: +359886149067

HALO Diagnostics aims at delivering life-changing patient experience, insights and outcomes by making advanced diagnostics available to everyone. The unique approach of bringing together a solid team of experienced healthcare professionals and software engineers, spread between Sofia and HALO’s imaging centers in the US, provides a truly unique opportunity of redefining how radiology is being done today. HALO Dx is building an entire software stack from the ground up in the form of a distributed multi-tenant SaaS platform, which covers all aspects of running a radiology practice (or a chain of). As well as all the necessary infrastructure (physical, virtual and application) to provide a flawless data bridge between medical devices at the edge and HALO’s data center and support various ML solutions. https://www.halodx.com/

Sofia Tech Park – Address of Innovation

Chaos develops visualization technologies that empower artists and designers to create photorealistic imagery and animation across all creative industries. The firm’s physically based renderer, V-Ray®, has been honored with both an Academy Award® and an Engineering Emmy® for its role in the widespread adoption of ray-traced rendering in motion pictures and television.

In 2022, Chaos merged with Enscape, a leading provider of real-time rendering and design workflow technology for the architecture, engineering and construction industries. Enscape offers innovative solutions that connect directly into modeling software, integrating design and visualization workflows seamlessly into one. Cylindo, a 3D commerce platform, also joined the group. Together, the newly-combined company is creating an end-to-end ecosystem of 3D visualization tools accessible to everyone.


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.

SUSE is a global leader in innovative, reliable and enterprise-grade open source solutions, relied upon by more than 60% of the Fortune 500 to power their mission-critical workloads. We specialize in Enterprise Linux, Kubernetes Management, and Edge solutions, and collaborate with partners and communities to empower our customers to innovate everywhere –- from the data center to the cloud, to the edge, and beyond. The key to reaching our goals is our employees, partners, community, and customers.
The company employs nearly 2000 people globally and is constantly growing both around the world and in Bulgaria. Our employees have the opportunity to work on some of the most interesting and innovative projects in the industry.
In 2020 SUSE acquired Rancher Labs and in 2021 the company was listed in the Prime Standard of the Frankfurt Stock Exchange.

Pure Water is a leading supplier in the field of water treatment authorized distributor of several well-known manufactures in the field. Their portfolio includes variety of filtrating and purifying water dispensers, already recognized in office locations as cost saving and environmental friendly solution.

cokitchen logo

CoKitchen is warm and cosy coworking space for chefs and lovers of fine food where everyone who likes to cook, can do it – with products of high quality and the guidance of skilled chefs in a professionally equipped kitchen. The company provides lunch for offices and non-boring catering for events.

Ciklum (www.ciklum.com) is a leading global product engineering and digital services company, serving Fortune 500 and fast-growing organisations. Headquartered in the UK, Ciklum has 4,000+ software developers, designers, product managers and data scientists around the world building tailored digital solutions that leverage emerging technologies. Ciklum specialises in enabling digital transformation for some of the largest household names in the digital economy. The Company empowers its clients and people to exceed their potential and pursue the extraordinary. Ciklum Bulgaria opened in 2022 and plans to grow by several hundreds in the next few years.

The BulStream team has been recording and broadcasting live conferences, lectures, motivational seminars, awards events, ceremonies and small concerts since 2007. They participated in one of the first live broadcasts on the Internet in Bulgaria. Their portfolio also includes product photography and videography for the best possible presentation of your product, pre & post production (technical consulting, construction of studio environment, preparation of pre-content and graphics packages, editing, color correction), as well as audio processing.


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

LearnK8s.io helps develop the knowledge and skills to get the most out of Kubernetes with hands-on online courses and instructor-led classes. Two of their related initiatives are:
Kube Careers is the Kubernetes job board where you can find curated jobs with clear salary ranges, and apply directly to companies.
Kube Events aggregates and curates all Kubernetes events happening around you and online such as meet-ups, webinars, conferences and training.

Linux Professional Institute (LPI) is the global certification standard and career support organization for open source professionals. With more than 200,000 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’s mission is to promote the use of open source by supporting the people who work with it.


IPACCT is one of the leading Internet providers in Bulgaria. Its start was in 2000, and since 2003 it has been providing assistance to other ISPs with its own software.

SAP partners with more than 23,000 companies in more than 140 countries, nearly 110,000 employees of over 155 nationalities, and has more than 50 years of history. Established in 2000, SAP’s development center in Sofia, SAP Labs Bulgaria, is one of the key and strategic divisions of SAP SE. The company employs over 1,400 professionals, with over 80% of the teams working on cloud technology-related topics.

We are Banafo.com – a great team with many years of experience in telecommunications and innovations. Almost 20 years ago, we created Zoiper – one of the most used soft phone apps. Recently, we started our newest project in the AI sphere – Banafo. We are developing products and solutions both in the field of real-time speech recognition and fast processing of large amounts of audio files. Our ML team uses combinations of machine learning and statistical analysis to train AI models, as well as WEB technologies (React, REST API, NoSQL, etc.) for integration into final solutions.

Our product is the shortest way for you to have an easy, fast and accurate recording and transcription of your online meetings.

We are Uber. The go-getters. The kind of people who are relentless about our mission to help people go anywhere and get anything. Movement is what we do. It’s our lifeblood. It runs through our veins. It’s what gets us out of bed each morning. It pushes us to constantly reimagine how we can move better. For you. For all the places you want to go. For all the things you want to get. For all the ways you want to earn. Across the entire world. In real-time. At the incredible speed of now.

We are a tech company that connects the physical and digital world to make movement happen at the push of a button for everyone, everywhere. In Bulgaria, our team of 80 software engineers, product managers, data scientists, and designers, builds FinTech services enabling money movements for our clients and partners. Every day 16 million trips are run through the Uber platform and our work impacts every single trip.

We are supporting Open fest – the largest Bulgarian conference for open culture, free and open software, and knowledge sharing. Come to meet us there!

HackSoft is a software development company that provides end-to-end solutions for building your product. HackSoft starts as a programming school – HackBulgaria, based in Sofia. Today, 8 years later, the company ships software solutions to companies from all over the World. HackSoft is a team of software builders, proficient in Python, Django, TypeScript, React, and AWS.

Our mission at Dev Craft is to deliver software solutions we are proud of. While doing so, we grow as professionals. We love to experiment with new technologies, deliver good code, and help to find solutions to all types of IT problems. We share our knowledge and we are open to new ideas and concepts. We love open-source software and giving back to society.
If you want to know more about us, drop us a line at hi@dev-craft.com.

Merkle is a leading data-driven customer experience management company (CXM) that delivers unique, personalized customer experiences across the entire customer journey. Furthermore, Merkle is part of Dentsu – one of the world’s largest agency networks – giving them more leverage and recourses. Merkle’s mission is to help its clients better serve their customers.
In Bulgaria Merkle has been launched by two e-commerce companies – Isobar Commerce and Live Area; the new brand is among the largest e-commerce companies in Bulgaria, having globally recognized clients in its portfolio. The technology team consists of Software Architects, Software Engineers, Quality Assurance Engineers, Project Managers, Business Analysts, and Technical Support specialists.
The team specializes in delivering, managing, and innovating multi-channel commerce platforms for major international brands and retailers, including Adidas, ASDA, Walt Disney, Clarins, Shiseido, and more. Merkle is among the Platinum partners of Salesforce, having 14 + years of experience in delivering projects based on Salesforce Commerce Cloud, a leading SaaS platform. The team masters technologies such as Javascript, Node.js, React js, Redux, Web components, and more; the QA team which consists of 100 + specialists, performs cross-browser web automation testing, security, and penetration testing, visual automation AI testing, and more.

SiteGround is among the leading companies in web hosting services. Awarded several times “Best Employer in Bulgaria” in the IT sector! From server optimization, software development and design, to quality support for our clients, we have a place for you to unfold your talent – check out our job opportunities at careers.siteground.com

VMware software powers the world’s complex digital infrastructure. Established in 2007, VMware Bulgaria has become the largest R&D site for VMware in EMEA, employing 1,700+ world-class professionals from more than ten nations. The site has transformed from a purely R&D facility to a multifunctional hub with product, revenue-generating professional services, and business operations teams.

Telebid Pro is a software company specialized in the development of custom business software and systems for the Bulgarian and international markets. The company specializes in areas such as systems integration, business analysis, finance and gaming. We are a small team of highly qualified specialists and we develop together with technology – we spend a large part of our time on R&D, trainings and certifications. We are based on Open Source technologies and we try to advocate for their use and popularity within the IT community.

DataArt is a global technology consultancy that designs, develops and supports unique software solutions, helping clients take their businesses forward. Recognized for their deep domain expertise and superior technical talent, DataArt teams create new products and modernize complex legacy systems that affect technology transformation in the telecommunications, financial, healthcare, tourism, media and gaming industry sector.


DEV.BG’s Job Board is the platform with the most IT job ads in Bulgaria. Partnering with more than 600 leading IT companies, the site has over 4500 open positions covering all types of technologies and seniority levels.
The platform features detailed profiles for each company and job ads categorization by tech miniboards to ensure maximum convenience for those seeking job opportunities in the IT sector.
The wide variety of Java,.Net, PHP, C/C++, Python, JavaScript, DevOps, Data Science, QA and many more tech roles as well as the exclusive job ads available only in DEV.BG, has made the platform one of the most preferred Job Boards for IT professionals.