Skip to main content



Over its more than two decade 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 core contributors
Martin Kersten 1993- MonetDB architect and developer Monet3 and MonetDB 5
Niels Nes 1996- MonetDB architect and developer SQL front end
Stefan Manegold 1997- MonetDB architect and developer XQuery, Performance, Quality Assurance
Sjoerd Mullender 2002- MonetDB architect and developer ODBC, installers, Release Management
Ying Zhang 2005- XRPC, SciQL, MonetDB Solutions
Arjen de Rijke 2007- Skyserver, website, Cloud
Bart Scheers 2008- LOFAR database for transient detection, BlackGem, SKA
Lefteris Sidirourgos 2007- Imprints, RDF, XML, Sampling, ordered index
Tina Grace 2009- Designer of logo and website, branding advisor
Martin van Dinther 2002, 2013- JDBC, ODBC, Quality assurance
Panos Koutsourakis 2015- Marvin, Cloud, releases
Pedro Ferreira 2016- IOT, MonetDBLite, SQL
Joeri van Ruth 2017- Performance, hot snapshots
Aris Koning 2018- SQL, compression
Thodoris Zois 2019- Logging
Svetlin Stalinov 2016- Frontend/backend development
Giulia Frascaria 2020- Documentation, performance
Bernardo Mota 2020- Time trails, IOT
Tamas Bolner 2020- PhP client library
Mitchell Weggemans 2020- R-connector
Giovanni Valcarenghi 2021- UX/UI Engineer
Past contributors
Mark Raasveldt 2015-2018 Python integration and embedded
Richard Koopmanschap 2015-2018 Marvin, Blaeu
Hannes Mühleisen 2012-2017 R and Node.JS connectors, embedded R
Dimitar Nedev 2014-2016 Cloud services, replication, 2PC
Foteini Alvanaki 2013-2016 GIS functionality, Point Clouds, array databases
Kostis Kyzirakos 2013-2016 GIS functionality,
Robin Cijvat 2013-2016 BAM/SAM loader for (DNA) sequence alignment
Thibaut Sellam 2012-2016 Data exploration frontends
Mrunal Gawade 2011-2016 Adapative multicore optimization
Pham Duc 2011-2016 RDF benchmarking
Eleni Petraki 2011-2015 Adaptive indexing
Romulo Goncalves 2006-2015 Replication, SQL, DataCell, Cyclotron, Point Clouds, and GIS
Yagiz Kargin 2011-2015 Data vault
Holger Pirk 2011-2014 Cross-device processing
Stratos Idreos 2006-2013 Database cracking
Milena Ivanova 2005-2013 Skyserver, Recycler, Octopus
Fabian Groffen 2004-2012 JDBC, PHP, Mapi, SQL+M5 Authorisation, Merovingian, User Support
Erietta Liarou 2006-2012 DataCell
Peter Boncz 1994-2010 MonetDB architect and developer Monet4, XQuery, XUpdate, RDF
Gijs Molenaar 2009-2010 Native Python API
Gabriele Modena 2009-2010 Native Ruby and PHP interfaces
Arjen de Vries 1998-2008 Various Multimedia Retrieval Modules
Marcin Zukowski 2004-2009 X100
Steffen Goeldner 2004-2008 Perl API
Marco Antonelli 2008 RDF
Tim Ruhl 1999-2006 Bug fixing at Data Distilleries
Wouter Scherphof 2006 Open-GIS, GEOM
Menzo Windhouwer 1998-2005 URL, crawlers, Saxophone, Zeep(Sop)
Alex van Ballegooij 2000-2005 RAM front end (array query language)
Wouter Alink 2005 XQuery web site
Johan List 2001-2003 XML storage and retrieval
Albrecht Schmidt 1999-2003 XML storage
Jonas Karlsson 1997-2001 SDDSs, dynamic loadable modules
Florian Waas 1997-2001 Dynamic loadable modules
Peter Bosch 2000-2001 Quad-trees
Wilco Quak 1994-2000 GIS modules
Carel van den Berg 1994-1998 ODMG front end