PostGIS is built and sustained by a worldwide community. This chapter records the people, organizations, funders, and upstream projects that have contributed code, documentation, infrastructure, testing, support, and funding.
The PostGIS Project Steering Committee (PSC) coordinates the general direction, release cycles, documentation, and outreach efforts for the PostGIS project. In addition the PSC provides general user support, accepts and approves patches from the general PostGIS community and votes on miscellaneous issues involving PostGIS such as developer commit access, new PSC members or significant API changes.
CI and website maintenance, Windows production and experimental builds, documentation, alignment of PostGIS with PostgreSQL releases, X3D support, management functions.
Index improvements, bug fixing and geometry/geography function improvements, SFCGAL, raster, GitHub curation, and ci maintenance.
Co-founder of PostGIS project. General bug fixing, geography support, geography and geometry index support (2D, 3D, nD index and anything spatial index), underlying geometry internal structures, GEOS functionality integration and alignment with GEOS releases, alignment of PostGIS with PostgreSQL releases, loader/dumper, and Shapefile GUI loader.
Bug fixes and maintenance, ci maintenance, git mirror management, management functions, integration of new GEOS functionality and alignment with GEOS releases, topology support, and raster framework and low level API functions.
Distance function enhancements (including 3D distance and relationship functions) and additions, Tiny WKB (TWKB) output format and general user support
SFCGAL enhancements and maintenance and ci support
Geometry clustering function additions, other geometry algorithm enhancements, GEOS enhancements and general user support
GEOS enhancements and documentation
MapBox Vector Tile, GeoBuf, and Flatgeobuf functions. Gitea testing and GitLab experimentation.
Geometry Processing, PostgreSQL gist, general bug fixing
Bug fixes, maintenance, stability, and performance
Prior PSC Member, MVT support, Bug fixing, Performance and stability improvements, GitHub curation, alignment of PostGIS with PostgreSQL releases
Prior PSC Member. Raster development, integration with GDAL, raster loader, user support, general bug fixing, testing on various OS (Slackware, Mac, Windows, and more)
Prior PSC Member. Coordinated bug fixing and maintenance effort, spatial index selectivity and binding, loader/dumper, and Shapefile GUI Loader, integration of new and new function enhancements.
Raster development, GDAL driver support, loader
(Emeritus) Input/output XML (KML,GML)/GeoJSON functions, 3D support and bug fixes.
Prior PSC Member. General development, site and buildbot maintenance, OSGeo incubation management
CMake support for PostGIS, built original raster loader in python and low level raster API functions
Prior PSC Member. Documentation and documentation support tools, buildbot maintenance, advanced user support on PostGIS newsgroup, and PostGIS maintenance function enhancements.
The original developer/Co-founder of PostGIS. Dave wrote the server side objects, index bindings, and many of the server side analytical functions.
Original development of the Shapefile loader/dumper.
Ongoing maintenance and development of core functions. Enhanced curve support. Shapefile GUI loader.
Architect of PostGIS raster implementation. Raster overall architecture, prototyping, programming support
Raster development (mostly map algebra analytic functions)
PostGIS raster discussions date to 2002 and included early PGCHIP experiments. Xing Lin developed the geotiff2pgraster PGRaster prototype during Google Summer of Code 2007. The WKT Raster project began in 2008, Jorge Arévalo developed the first GDAL driver prototype during Google Summer of Code 2009, and the 2010 FOSS4G code sprint agreed to make WKT Raster the PostGIS raster type. Raster support shipped as part of PostGIS 2.0 in 2012.
The early implementation team included Pierre Racine, Mateusz Loskot, Sandro Santilli, Jorge Arévalo, Bborie Park, David Zwarg, and Regina Obe. Their work established the raster type, loader, GDAL integration, raster/vector operations, map algebra, documentation, and testing that became the current raster subsystem.
Other recorded contributions include Jeff Adams's early sprint work, Qing Liu's raster distance analysis, Maurício Carvalho Mathias de Paulo's QGIS raster plugin and related paper with Lubia Vinhas, and Ignacio Brodin's gvSIG raster plugin and presentation with Jorge Sanz. Bryce L. Nordgren created early raster coverage and seamless-architecture diagrams. Pierre Racine wrote the original raster/vector tutorial and created its walkthrough and early API diagrams.
The historical project planning record credits Steve Cumming and Université Laval with funding Pierre Racine's work from June 2008 through July 2012; Martin Daly and Cadcorp with funding about six months of Mateusz Loskot's work through June 2009; Tyler Erickson and Michigan Tech Research Institute with a $1,200 USD contribution; Miguel Lizondo and Deimos Space with support for about two years of Jorge Arévalo's work through June 2011; and the Center for Vectorborne Diseases at UC Davis with funding Bborie Park's work from March 2010 through July 2012.
| @amwps290 (GitHub user) | Florian Weimer | Maurício Carvalho Mathias de Paulo |
| @kannes (GitHub user: Hannes) | François Bonzon | Maxim Kochetkov |
| @sunhm89 (GitHub user) | Frank Warmerdam | Maxim Korotkov |
| @wewindy (GitHub user: Chen) | George Silva | Maxime Guillaud |
| Adrien Berchet | Gerald Fenoy | Maxime van Noppen |
| Alex Bodnaru | Gino Lucrezi | Maxime Schoemans |
| Alex Mayrhofer | Giovanni Zezza | Megan Ma |
| Andrea Peri | Grant Hutchins | Mehmet Ince |
| Andreas Forø Tollefsen | Greg Troxel | Michael Fuhr |
| Andreas Neumann | Guillaume Lelarge | Michal Páleník |
| Andreas Schild | Giuseppe Broccolo | Mike Toews |
| Andrew Gierth | Han Wang | Mitchell Henke |
| Andrew Harvey | Hannes Janetzek | Nathan Wagner |
| Anne Ghisla | Hans Lemuet | Nathaniel Clay |
| Antoine Bajolet | Haribabu Kommi | Nicolas Roelandt |
| Ariel Mashraki | Harrissou Sant-anna | Nikita Shulga |
| Arno Renevier | Havard Tveite | Nikolai Berkoff |
| Arthur Bazin | Ignacio Brodin | Norman Barker |
| Arthur Lesuisse | IIDA Tetsushi | Norman Vine |
| Artur Zakirov | Ingvild Nystuen | Patricia Tozer |
| Ayo Adesugba | Jackie Leng | Paul Norman |
| Barbara Phillipot | James Addison | Paulo Cesar Coronado |
| Baris Ergun | James Marca | Pavel Seleznev |
| Bas Couwenberg | Jan Katins | Pawel Ostrowski |
| Ben Jubb | Jan Tojnar | Peter Nguyen |
| Benjamin Morel | Jason Smith | Pierre Cardinal |
| Bernd Reiß | Jean Felder | Qing Liu |
| Bernhard Reiter | Jeff Adams | Rafal Magda |
| Bill Mill | Jelte Fennema | Ralph Mason |
| Björn Esser | Jim Jones | Rémi Cura |
| Brian Hamlin | Joe Conway | Richard Greenwood |
| Bruce Rindahl | Jonne Savolainen | Robert Coup |
| Bruno Wolff III | Jorge Gustavo Rocha | Rodrigo Smarzaro |
| Bryce L. Nordgren | Jorge Sanz | Roger Crew |
| Carl Anderson | Jose Carlos Martinez Llari | Ron Mayer |
| Carlos López Quintanilla | Jostein Leira | Sam Peters |
| Charles Karney | Jörg Habenicht | Sarath Kumar |
| Charlie Savage | Juan Sebastian Jimenez Aldana | Sergei Shoulbakov |
| Chris Mayo | Juergen E. Fischer | Sergey Fedoseev |
| Christian Schroeder | Julien Monticolo | Shinichi Sugiyama |
| Christoph Berg | Julien Rouhaud | Shoaib Burq |
| Christoph Moench-Tegeder | Kashif Rasul | Silvio Grosso |
| Dan Faudemer | Klaus Foerster | Simon Greener |
| Dan Levy | Kris Jurka | Stefan Corneliu Petrea |
| Dane Springmeyer | Kristian Thy | Steffen Macke |
| Daniel Nylander | Lars Aksel Opsahl | Stepan Kuzmin |
| Dapeng Wang | Laurențiu Nicola | Stephen Frost |
| Daryl Herzmann | Laurenz Albe | Stephen Woodbridge |
| Dave Fuhry | Lars Roessiger | Steven Ottens |
| David G. Johnston | Lauri Kajan | Svyatoslav Bogdanov |
| David Garnier | Leo Hsu | Talha Rizwan |
| David Skea | Loic Dachary | Temuri Doghonadze |
| David Techer | Louis Descoteaux | Teramoto Ikuhiro |
| Dennis Tighe | Luca Delucchi | Thomas Muguet |
| Denys Kovshun | Luca S. Percich | Thomas Petazzoni |
| Devrim Gündüz | Lucas C. Villa Real | Tobias Bussmann |
| Dian M Fay | Ludovic Hirlimann | Tom Glancy |
| Dmitry Vasilyev | Lubia Vinhas | Tom van Tilburg |
| Edouard Choinière | Maksim Korotkov | Victor Collod |
| Eduin Carrillo | Manuel Morillo | Vincent Bre |
| Egor Ivkov | Maria Arias de Reyna | Vincent Mora |
| Eric Ridge | Marc Ducobu | Vincent Picavet |
| Esteban Zimanyi | Mark Sondheim | Volf Tomáš |
| Eugene Antimirov | Markus Schaber | Xing Lin |
| Evan Si | Markus Wanner | Yoichi Kayama |
| Even Rouault | Matt Amos | Yuri Astrakhan |
| Fabrice Fontaine | Matt Bretl | Zuo Chenwei |
| Florentin Drogeanu | Matthias Bay |
These are corporate entities that have contributed developer time, hosting, or direct monetary funding to the PostGIS project. In alphabetical order:
Crowd funding campaigns are campaigns we run to get badly wanted features funded that can service a large number of people. Each campaign is specifically focused on a particular feature or set of features. Each sponsor chips in a small fraction of the needed funding and with enough people/organizations contributing, we have the funds to pay for the work that will help many. If you have an idea for a feature you think many others would be willing to co-fund, please post to the PostGIS newsgroup your thoughts and together we can make it happen.
PostGIS has experimented with community fundraising for features in the past. We used PledgeBank and we got two successful campaigns out of it.
postgistopology - 10 plus sponsors each contributed $250 USD to build toTopoGeometry function and beef up topology support in 2.0.0. It happened.
postgis64windows - 20 someodd sponsors each contributed $100 USD to pay for the work needed to work out PostGIS 64-bit issues on windows. It happened.
PostgreSQL, the extensible database system on which PostGIS is built. PostgreSQL provides the SQL engine, transactions, query planner, extension framework, and index access methods used by PostGIS.
The GEOS geometry operations library.
The PROJ coordinate transformation and geodesic calculation library.
The GDAL Geospatial Data Abstraction Library used to power much of the raster functionality introduced in PostGIS 2. In kind, improvements needed in GDAL to support PostGIS are contributed back to the GDAL project.
LibXML2 for XML-based spatial formats, and JSON-C for GeoJSON input.
The GNU Multiple Precision Arithmetic Library (GMP) for precision-sensitive topology operations.
protobuf-c for Mapbox Vector Tile and Geobuf output.
The iconv API, supplied by the C library or GNU libiconv, for character encoding conversion in the shapefile loader.
SFCGAL for advanced 2D and 3D functions, together with the CGAL algorithms that SFCGAL exposes.
PostGIS ships selected source from FlatGeobuf and FlatBuffers to support FlatGeobuf input and output.
Wagyu and Mapbox Geometry provide polygon clipping and validation for Mapbox Vector Tile output.
Ryu provides round-trip-safe floating-point formatting, and uthash provides in-process hash tables.
The shapefile loader and dumper include code derived from
ShapeLib,
originally by Frank Warmerdam and Even Rouault. They also include
public-domain getopt code from AT&T.
liblwgeom/lookup3.c contains the
public-domain lookup3 hash function by Bob
Jenkins.