EU Open Source Applications Catalogue

Encouraging open-source business applications reuse via the creation of an EU wide Applications Catalogue for European Public Services

Workshop within the framework of the Open Source Workshops for Computing and Sustainability event

Albert Borschette Conference Center, Brussels: 02 December 2022

Workshop time: 12:00-13:30 CET | Room 1A


Workshop Description

Public administrations across Europe have over the years built a huge number of business applications using open-source software tools.

Despite this, we continue to rebuild the same applications, within each country and across the EU.  With national open source application catalogues emerging, there is a need for a Europe wide applications catalogue, which users can search to find what they need. Such a catalogue could save millions of Euros and allow faster solution realisation. The Commission’s FOSSEPS Project is building an initial version due in 2023.




Evangelos Tsavalopoulos

Evangelos Tsavalopoulos (Head of Sector, DIGIT B3.002)

Evangelos has more than 25 years of professional experience that spans technology, advertising and media. For the last 21 years he has been working for the European Commission leading the design and implementation of various large-scale digital solutions and services. Besides Information and Communication Technologies (ICT), Evangelos also has a sound professional experience of more than 11 years in data protection/privacy and also on aspects relevant to computer and information security. Evangelos is currently leading, among other, the Open Source Programme Office (OSPO) of the European Commission (EC) that is the go-between for all activities outlined in the EC Open Source Strategy and the respective action plan.  

Assisted by

Saranjit Arora

Saranjit Arora (EC OSPO)

Saranjit Arora is an open source project manager/consultant and member of the European Commission’s OSPO.  He earlier managed the highly successful EU-FOSSA 2 project, and today leads the European Parliament sponsored FOSSEPS Pilot Project. FOSSEPS aims to promote cooperation between European Public Services on open source via specific initiatives.  One of these is to build an EU Applications Catalogue of business solutions built by and for the EU MS27 public administrations. Saranjit studied Mathematics and Computer Science at University of Nottingham many moons ago and has worked with the Commission for 5 years.



Clementine Valayer

Clementine Valayer (Gartner)

Clémentine Valayer is Director with Gartner Consulting’s Data & Analytics (D&A) practice, primarily working in the Public Sector with European Institutions. Mrs. Valayer possesses more than 20 years of experience in IT consulting and her focus areas includes, interoperability and monitoring of digital transformation of cross-border public services, data sharing and digital platforms. Mrs. Valayer’s assignments usually require working within multistakeholder and multidisciplinary teams involving strategists, facilitators, domain experts, architects and technical experts. Last year, her team supported DIGIT in shaping the European open source solution catalogue design and analysed interoperability needs with the definition of an efficient data model supporting discoverability of solutions.  



Deniz Özleten

Deniz Özketen (FOSSEPS Project - Sopra Steria)

Deniz Özketen has 15 years of expertise in helping teams adopt Cloud native mindset through agile practices. In his current role as an IT architect and Opensource expert at Sopra Steria BeNeLux, he empowers teams to navigate the complex FOSS technological and methodological landscape and demystify emerging best practices. Deniz was a core team member of the FOSSEPS Pilot Project and led the technical analysis and proposal to design the EU Application Catalogue solution.  



Diego Calvo

Diego Calvo de Nó (OSB Alliance)

Diego Calvo de Nó is since 2006 member of the board at Proventa. Proventa offers digital transformation services to its clients based on high innovative products. Diego is also member of the executive board of the OSB Alliance, the German open source association. Diego’s largest client is Deutsche Telekom for which he and his team have delivered successful solutions for the past 20 years. Based in Frankfurt, Proventa also provides its innovative transformation services to several large financial institutions and public organizations.  Diego’s technical focus is the open source database PostgreSQL and its introduction as standard database at large companies and institutions. Before joining Proventa, Diego started his career at Accenture. Diego studied Telecommunications at the RWTH Aachen and Business Administration at the Fernuniversität Hagen. He is fluent in German, Spanish, English and French.  



Leonardo Favario

Leonardo Favario (Team Digitale)

Since 2018, Leonardo has been responsible for the open source strategy in the Italian Government. This role involves the development of the Developers Italia project, the publiccode.yml specification, the new National guidelines and the catalogue of open source software created by public administrations and made available for reuse. Leonardo has been a free and open source software advocate since a very young age. He holds a PhD in computer and control engineering and he has been a Fulbright BEST scholar in California where he also worked on the development of a set of open source platforms at Stanford University. 



Stefano Z

Stefano Zacchiroli (Software Heritage)

Stefano Zacchiroli is full professor of computer science at Télécom Paris, Polytechnic Institute of Paris. His current research interests span digital commons, open source software engineering, computer security, and the software supply chain. He is co-founder and CTO of Software Heritage, the largest public archive of software source code. He is a Debian developer since 2001, where he served as Debian project leader from 2010 to 2013. He is a former board director of the Open Source Initiative (OSI) and recipient of the 2015 O’Reilly Open Source Award. 



Fabio B

Fabio Bonelli (Team Digitale)

Software engineer and free software enthusiast, working on the Italian Government's Developers Italia project