Sponsors and Partners

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

If you want for us to show how we can be of help, please contact us:

Yana Petrova (e-mail: yana@openfest.org)
Vasil Kolev (mobile: + 359 888 508044, e-mail: vasil@openfest.org)

Leanplum logo

Leanplum is a fast growing company building the next generation marketing cloud. With an investment of $93 million and offices in Sofia, San Francisco, New York, London, Amsterdam and Singapore, Leanplum transforms the mobile engagement and accelerates product innovation in areas such as machine learning, cross-channel automation, and 1:1 personalization. Leanplum platform captures more than 25 billion mobile actions daily and enables global forward-looking brands like Tinder, Grab and Tesco to drive long-term and meaningful customer relationships via customized, real-time campaigns.


Telebid Pro is a software company based in Bulgaria and for more than 5 years it has been providing specialized development of products based on Linux and Open Source technologies.

StorPool is a Bulgarian software-defined storage vendor. The storage solution they develop is used by service providers, SaaS companies, Enterprises, MSPs, hosting and cloud providers. The company believes that storing data should be simpler, cheaper and more efficient.
StorPool is among the few Bulgarian companies grown from a startup to a successful global storage vendor. Established in 2011, they have developed an innovative storage software and now sell it on the global market. Its team believes that a successful company and product, come as a result of the efforts of extraordinary people!

women who code logo

Women Who Code empowers members and inspires them to advance their careers through organizing technical and leadership events, providing scholarships, conference tickets and learning materials and building a global community where networking and mentorship are valued. They are working to change the face of tech by empowering a more diverse group of engineers to succeed. Technology is driving the future in every industry, but it will stagnate short of its full potential if it does not adopt more inclusive practices. They strongly believe in the value of diversity, and envision a world where women are representative as technical executives, founders, venture capitalists, board members, and software engineers.

Semantic technology makes everything connected to anything and helps building smart data through intricate models for representing information. To help advance the semantic world Ontotext combines a semantic graph database with text mining, transforming how organizations identify meaning across diverse databases and massive amounts of unstructured data.

Uber is committed to igniting opportunity by setting the world in motion. In addition to helping you get from point A to point B, we’re working to bring the future closer with self-driving technology and urban air transport, helping people order food quickly and affordably, removing barriers to healthcare, creating new freight-booking solutions, and helping companies provide a seamless employee travel experience.

vmware bulgaria logo

VMware, a global leader in cloud infrastructure and digital workspace technology, accelerates digital transformation by enabling unprecedented freedom and flexibility in how our customers build and evolve IT environments. With VMware solutions, organizations are improving business agility by modernizing data centers and integrating public clouds, driving innovation with modern apps, creating exceptional experiences by empowering the digital workspace, and safeguarding customer trust by transforming security. VMware is a member of the Dell Technologies family of businesses.

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.

Sofia Tech Park – Address of Innovation


Digital Republic is an association established in the beginning of 2018 by like-minded activists from the Bulgarian communities of Creative Commons and Wikipedia, but also independent IT and data management specialists and representatives of the Bulgarian creative industries, with the ambition to unite the efforts of the local open community. Our present mission is the digitization of education, cultural heritage and entrepreneurship in Bulgaria in a way that asserts civil and human rights. Throughout this year we have been actively involved in the discussion of the ongoing copyright reform in the EU, advocating for the open Internet.

SAP Labs Bulgaria

SAP company works with over 388 000 customers in more than 180 countries and has more than 91 000 employees from 150 nationalities. Established 18 years ago, the development center SAP Labs Bulgaria is one of the key subsidiaries of SAP SE. In the company currently work more than 830 professionals and more than 75% of the teams are working on cloud topics. SAP Labs Bulgaria has a significant contribution to the revolutionary In-Memory technology SAP HANA, as well as a key role for the defining and developing SAP Cloud Platform.

Founded in 2004 by a few university friends, SiteGround gradually but steadily turned into a leading web hosting service provider. With only a handful of people working from their university dorm rooms in the beginning, now the company has more than 400 employees and is constantly growing. Today they are one of the leading international web hosting companies, powering 1.5 million websites in multiple data centers around the world. For SiteGround hard work and professional development are as important as having fun along the way.

initLab е Hackerspace на София, място за събиране на различни хора с хакерско мислене и интересни идеи.


BULPROS is an innovative global IT and BPO services, solutions and product provider, one of the fastest growing technology companies, recognized by the prestigious rankings of Deloitte “Technology Fast 50 in CE” and “Technology Fast 500 in Europe, Middle East, and Africa”, Inc. 5000 Europe, Financial Times 1000 Europe etc. BULPROS operates on a global scale and has more than 1200 employees, working across 18 offices, located in Europe and North America.

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.

Anakatech’s personalized solutions encompass online and HTML5-based scratch cards, slot machines and instant win games. Anakatech work to fit the precise requirements with the experience and flexibility necessary to deliver complete solutions, in all the commercial spheres in gaming. Anakatech’s experienced innovators use proven backend tools to provide and develop games which provide exceptional value to our customers, and unbeatable entertainment for players.


Headquartered in California, Konsulko works with their customers throughout North America, Europe and Asia. Their European subsidiary, Konsulko Ltd is based in Sofia, Bulgaria. If you are building a new product, They’d love to talk with you about engaging Konsulko’s engineering expertise and experience on your project. Or if you’re a software developer with a passion for Linux, please contact them about joining the Konsulko team.