Contributors & Sponsors



Over its decades of development, many people have contributed to the development of MonetDB, as architects, code developers or as guinea pigs, while developing applications on top of the often fragile development code base. MonetDB wouldn’t have come to life without this dedication and involvement. Their names should be engraved in stone, but bits is all we have. Nameless and countless, but equally important are the people on the mailing lists, challenging us with bugs, feature requests, and being happy users.


Active contributors

Niels Nes1996-MonetDB architect and developer SQL front end
Sjoerd Mullender2002-MonetDB architect and developer ODBC, installers, Release Management
Ying Zhang2005-XRPC, SciQL, MonetDB Solutions
Arjen de Rijke2007-Skyserver, website, cluster
Bart Scheers2008-LOFAR database for transient detection, BlackGem, SKA
Tina Grace2009-Designer of logo and website, branding advisor
Martin van Dinther2002, 2013-JDBC, ODBC, Quality assurance
Panos Koutsourakis2015-Marvin, Cloud, CI/QA
Joeri van Ruth2017-Performance, hot snapshots
Yunus Koning2018-SQL, compression, MonetDBe
Svetlin Stalinov2016-Frontend backend development, QA
Gijs Molenaar2009-2010, 2020-Native Python API, Python bindings and embedded
Tamas Bolner2020-PhP client library
Mitchell Weggemans2020-R-connector
Giovanni Valcarenghi2021-UX/UI Engineer, Social Media
Stefanos Mavros2021-Geometry module, Developer
Lucas Pereira2022-Performance, Developer


Past contributors

Bernardo Mota2020-2022Time trails, IOT, Java Embedding
Martin Kersten1993-2022MonetDB architect, developer Monet3 and MonetDB 5
Nuno Filipe Faria2022-2022Grouped commit
Adrian Garcia Garcia2022-2022Benchmarks
Pedro Ferreira2016-2022IOT, MonetDBLite, SQL
Thodoris Zois2019-2021Logging
Stefan Manegold1997-2019MonetDB architect and developer XQuery, Performance, Quality Assurance
Lefteris Sidirourgos2007-2019Imprints, RDF, XML, Sampling, ordered index
Giulia Frascaria2020Documentation, performance
Mark Raasveldt2015-2018Python integration and embedded
Richard Koopmanschap2015-2018Marvin, Blaeu
Hannes Mühleisen2012-2017R and Node.JS connectors, embedded R
Dimitar Nedev2014-2016Cloud services, replication, 2PC
Foteini Alvanaki2013-2016GIS functionality, Point Clouds, array databases
Kostis Kyzirakos2013-2016GIS functionality,
Robin Cijvat2013-2016BAM/SAM loader for (DNA) sequence alignment
Thibaut Sellam2012-2016Data exploration frontends
Mrunal Gawade2011-2016Adapative multicore optimization
Pham Duc2011-2016RDF benchmarking
Eleni Petraki2011-2015Adaptive indexing
Romulo Goncalves2006-2015Replication, SQL, DataCell, Cyclotron, Point Clouds, and GIS
Yagiz Kargin2011-2015Data vault
Holger Pirk2011-2014Cross-device processing
Stratos Idreos2006-2013Database cracking
Milena Ivanova2005-2013Skyserver, Recycler, Octopus
Fabian Groffen2004-2012JDBC, PHP, Mapi, SQL+M5 Authorisation, Merovingian, User Support
Erietta Liarou2006-2012DataCell
Peter Boncz1994-2010MonetDB architect and developer Monet4, XQuery, XUpdate, RDF
Gabriele Modena2009-2010Native Ruby and PHP interfaces
Arjen de Vries1998-2008Various Multimedia Retrieval Modules
Marcin Zukowski2004-2009X100, Actian, Snowflake
Steffen Goeldner2004-2008Perl API
Marco Antonelli2008RDF
Tim Ruhl1999-2006Bug fixing at Data Distilleries
Wouter Scherphof2006Open-GIS, GEOM
Menzo Windhouwer1998-2005URL, crawlers, Saxophone, Zeep(Sop)
Alex van Ballegooij2000-2005RAM front end (array query language)
Wouter Alink2005XQuery web site
Johan List2001-2003XML storage and retrieval
Albrecht Schmidt1999-2003XML storage
Jonas Karlsson1997-2001SDDSs, dynamic loadable modules
Florian Waas1997-2001Dynamic loadable modules
Peter Bosch2000-2001Quad-trees
Wilco Quak1994-2000GIS modules
Carel van den Berg1994-1998ODMG front end




The development of MonetDB has been made available by subsidies of several organizations. We are grateful to acknowledge them:

  • Centrum Wiskunde & Informatica (1993-) to facilitate the Database Architectures research group.
  • The European Commission for the ESPRIT-III project Pythagoras (1992-1995), the ESPRIT-IV projects Mercury (1996-1998) and Keso (1996-1998).
  • The High Performance Computing Netherlands (HPCN) project IMPACT (1996-1999).
  • The Telematics Institute for funding the national project Digital Media Warehouses (1998-2003).
  • The Netherlands Organisation for Scientific Research (NWO) for the AMIS project (1997-2001).
  • The Ministry of Economic Affairs providing the means through the project MIA (1999-2003) and the Ministry of Education of the Netherlands providing the means using MultimediaN (2004-2009), and Bricks (2004-2009).
  • The Netherlands Organisation for Scientific Research (NWO) for their support in the Focus program, project Cracking a scientific database (2006-2010).
  • The European Erasmus program for internships.
  • The Netherlands Organisation for Scientific Research (NWO) on Graph Databases (2009-2013).
  • The EU FP-7 project EMILI for their support in streaming data in SCADA systems (2009-2012).
  • The EU FP-7 project TELEIOS geared at remote sensing applications (2010-2013).
  • The EU FP-7 project PlanetData aimed at Linked Open Data initiative (2010-2013).
  • The EU FP-7 project LOD2 aimed at scaleable Linked Open Data (2010-2014).
  • The Netherlands Organisation for Scientific Research NWO for their material support on the SciLens infrastructure (2011-2016), (2016-2019).
  • The COMMIT/ project (2011-2017).
  • The EU FP-7 Flagship project Human Brain Project project(2013-2016).
  • The EU FP-7 project LEO) on Linked Open Earth Observation Data for Precision Farming (2013-2015).
  • The EU FP-7 project CoherentPaaS for a Cloud based Database-as-a-Service (2013-2016).
  • The EU FP-7 project LDBC for Linked Data Benchmark Councel (2013-).
  • The EU H2020 project ExaNest (2015-2018).
  • The EU H2020 project FashionBrain (2017-2019).
  • The EU H2020 project ACTiCLOUD (2017-2019).
  • The EU H2020 project VesselAI (2020-2023).




The development and maintenance of MonetDB has been supported by the generosity of our donors. Their contributions help us invest in research, maintain servers, improve documentation, and provide comprehensive user support.

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