DORS/CLUC – Dani otvorenih računarskih sustava / Croatian Linux Users’ Conference – is the oldest and biggest regional conference that covers free and open source software, open standards, and the Linux operating system. For the last 27 years, DORS/CLUC has brought together many prominent individuals and companies from the free and open source software community. 

The conference is coordinated by HrOpen and HULK, two non-profit organizations that tirelessly work to promote open technologies and encourage their application in everyday life. 

This year, the conference will take place on May 15th and 19th, at the University Algebra, Croatia. Once again, an interesting crowd will gather to attend talks about awesome free software topics. 

During the two days of talks, workshops, and fun, DORS/CLUC becomes a place where students, FOSS enthusiasts, tinkerers, developers, hackers, freelancers, companies and the public sector representatives meet to learn, network, do business and plan projects together – all with focus on free software and Linux. 

DORS/CLUC has traditionally been divided into two parts: keynotes/talks and workshops. 

Keynotes and talks generally cover business topics, the latest experiences with FLOSS implementation and migration, and presentations of new tools and technologies, along with explanations on how to use them. 

Workshops are mostly tech-oriented, and provide the attendees with an opportunity to learn how to use a particular technology, as well as how to troubleshoot and solve problems with free and open source software and hardware. 

There is something for everyone at DORS/CLUC. Whether you are a beginner or an experienced member of the FOSS community, we believe that two days full of interesting talks, networking, and knowledge exchange will count as time well-spent. 

The Croatian Association for Open Systems and Internet (HrOpen) was established in 1992. HrOpen is a self-financed, non-profit association modelled after many other similar European associations. From 1993 to 1998, HrOpen was a member of the European Forum for Open Systems. Since 2010, HrOpen has been a member of the OpenForum Europe, an OSS advocacy group with headquarters in Brussels, Belgium. 

HrOpen is tasked with promoting FLOSS technology through workshops, seminars and conferences, and providing help by consulting through expert groups. More details about the association itself are available at:

The Croatian Linux Users’ Association (HULK) is a non-profit citizen association that has been promoting development and usage of GNU/Linux systems and other FLOSS technology in Croatia since 1996. Croatian Linux Users’ Association has been recognized as a key figure in consulting, usage and popularization of GNU/Linux operating systems and FLOSS technology. 

The Croatian Linux Users’ Association is responsible for activities such as: 

  • maintaining the website,
  • organizing the DORS/CLUC conference and other similar events, both virtual and live 
  • educating local users through workshops and talks, as well as helping them by adapting FLOSS solutions to their needs.