Chapter 1. Introduction

Table of Contents
1.1. Project Steering Committee
1.2. Core Contributors Present
1.3. Core Contributors Past
1.4. Other Contributors

PostGIS is a spatial extension for the PostgreSQL relational database that was created by Refractions Research Inc, as a spatial database technology research project. Refractions is a GIS and database consulting company in Victoria, British Columbia, Canada, specializing in data integration and custom software development.

PostGIS is now a project of the OSGeo Foundation and is developed and funded by many FOSS4G developers and organizations all over the world that gain great benefit from its functionality and versatility.

The PostGIS project development group plans on supporting and enhancing PostGIS to better support a range of important GIS functionality in the areas of OpenGIS and SQL/MM spatial standards, advanced topological constructs (coverages, surfaces, networks), data source for desktop user interface tools for viewing and editing GIS data, and web-based access tools.

1.1. Project Steering Committee

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.

Regina Obe

Buildbot Maintenance, Windows production and experimental builds, documentation, alignment of PostGIS with PostgreSQL releases, general user support on PostGIS newsgroup, X3D support, TIGER geocoder Support, management functions, and smoke testing new functionality or major code changes.

Bborie Park

Raster development, integration with GDAL, raster loader, user support, general bug fixing, testing on various OS (Slackware, Mac, Windows, and more)

Paul Ramsey (Chair)

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, PointCloud (in development), GEOS functionality integration and alignment with GEOS releases, alignment of PostGIS with PostgreSQL releases, loader/dumper, and Shapefile GUI loader.

Sandro Santilli

Bug fixes and maintenance, git mirror management, integration of new GEOS functionality and alignment with GEOS releases, topology support, and raster framework and low level API functions.

1.2. Core Contributors Present

Jorge Arévalo

Raster development, GDAL driver support, loader

Nicklas Avén

Distance function enhancements (including 3D distance and relationship functions) and additions, Tiny WKB (TWKB) output format and general user support

Dan Baston

Geometry clustering function additions, other geometry algorithm enhancements, GEOS enhancements and general user support

Olivier Courtin

Input/output XML (KML,GML)/GeoJSON functions, 3D support and bug fixes.

Björn Harrtell

MapBox Vector Tile and GeoBuf functions. Gogs testing and GitLab experimentation.

Mateusz Loskot

CMake support for PostGIS, built original raster loader in python and low level raster API functions

Raúl Marín Rodríguez

Bug fixing

Darafei Praliaskouski

Index improvements, bug fixing and geometry/geography function improvements, GitHub curation, and Travis bot maintenance.

Pierre Racine

Raster overall architecture, prototyping, programming support

1.3. Core Contributors Past

Mark Cave-Ayland

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.

Chris Hodgson

Prior PSC Member. General development, site and buildbot maintenance, OSGeo incubation management

Kevin Neufeld

Prior PSC Member. Documentation and documentation support tools, buildbot maintenance, advanced user support on PostGIS newsgroup, and PostGIS maintenance function enhancements.

Dave Blasby

The original developer/Co-founder of PostGIS. Dave wrote the server side objects, index bindings, and many of the server side analytical functions.

Jeff Lounsbury

Original development of the Shapefile loader/dumper.

Mark Leslie

Ongoing maintenance and development of core functions. Enhanced curve support. Shapefile GUI loader.

David Zwarg

Raster development (mostly map algebra analytic functions)

1.4. Other Contributors

Individual Contributors

Alex BodnaruGerald FenoyMaxime Guillaud
Alex MayrhoferGino LucreziMaxime van Noppen
Andrea PeriGreg TroxelMichael Fuhr
Andreas Forø TollefsenGuillaume LelargeMike Toews
Andreas NeumannHaribabu KommiNathan Wagner
Anne GhislaHavard TveiteNathaniel Clay
Antoine BajoletIIDA TetsushiNikita Shulga
Artur ZakirovIngvild NystuenNorman Vine
Barbara PhillipotJackie LengPatricia Tozer
Ben JubbJames MarcaRafal Magda
Bernhard ReiterJason SmithRalph Mason
Björn EsserJeff AdamsRémi Cura
Brian HamlinJonne SavolainenRichard Greenwood
Bruce RindahlJose Carlos Martinez LlariRoger Crew
Bruno Wolff IIIJörg HabenichtRon Mayer
Bryce L. NordgrenJulien RouhaudSebastiaan Couwenberg
Carl AndersonKashif RasulSergey Fedoseev
Charlie SavageKlaus FoersterShinichi Sugiyama
Christoph BergKris JurkaShoaib Burq
Christoph Moench-TegederLaurenz AlbeSilvio Grosso
Dane SpringmeyerLars RoessigerSteffen Macke
Dave FuhryLeo HsuStepan Kuzmin
David GarnierLoic DacharyStephen Frost
David SkeaLuca S. PercichTalha Rizwan
David TecherMaria Arias de ReynaTom Glancy
Dmitry VasilyevMarc DucobuTom van Tilburg
Eduin CarrilloMark SondheimVincent Mora
Eugene AntimirovMarkus SchaberVincent Picavet
Even RouaultMarkus WannerVolf Tomáš
Frank WarmerdamMatt Amos 
George SilvaMatthias Bay 

Corporate Sponsors

These are corporate entities that have contributed developer time, hosting, or direct monetary funding to the PostGIS project. In alphabetical order:

Crowd Funding Campaigns

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 2.0.0 was the first release we tried this strategy. 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.

Important Support Libraries

The GEOS geometry operations 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.

The PROJ cartographic projection library

Last but not least, PostgreSQL, the giant that PostGIS stands on. Much of the speed and flexibility of PostGIS would not be possible without the extensibility, great query planner, GIST index, and plethora of SQL features provided by PostgreSQL.