OSGeo logo with a compass design and the text 'OSGeo' in green and black.
Logo of OSGeo-US Local Chapter with a green and blue compass symbol and text.

OSGeo and FOSS4G

The Open Source Geospatial Foundation (OSGeo) sponsors an annual international gathering called the Free and Open Source Software for Geospatial (FOSS4G) conference. FOSS4G North America is the regional conference organized by OSGeo US and other local OSGeo chapters in North America when the international conference is not in North America. Other regional conferences are also held throughout the world when the international conference is not in their region.

Why Open Source?

Open source software is distributed with one of several permissive license types. Under these licenses, the source code of the project is freely available to the public, not kept secret like proprietary software. This allows people to use and adapt the software as needed. Projects are often community supported, and today are the foundation the modern software industry, heavily used in other open source and proprietary projects alike. Check out the OSGeo guide about open source software for more information.

Past Conferences

FOSS4G North America 2025 logo for the National Capital Region, featuring a stylized depiction of the National Monument, an address pin, and a map with layered colors.
Logo for FOSS4G North America 2024 event in St. Louis, Missouri, featuring the Gateway Arch, a red flag, and surrounding cityscape.
Logo for FOSSAG NA, Baltimore 2023 featuring a red crab in a yellow circle with a red bucket and a yellow background, surrounded by a navy blue ring with white and yellow text.
Logo for FOSS4G-NA San Diego 2019 featuring a stylized outline of the Coronado Bridge and a sailboat in blue with a yellow flag on the top mast of the sailboat.
FOSS4G North America 2018 logo in St. Louis with a stylized cityscape and Gateway Arch.
Logo for FOSS4G Boston 2017 featuring a city skyline and a sailboat.
Logo for FOSS4G North America 2016, featuring a purple and green circle with a mountain, star, and leaf graphic, and text in blue, purple, and green.
Logo with a stylized bridge, star, and green banner reading 'FOSS4G North America 2015'.
Logo for FOSS4G PDX 2014, featuring a tree cross-section with a red bird perched on top, and a ribbon with '10th Anniversary' written on it.
Circular badge with a red background, white starburst at the top, and white and teal text that reads 'FOSS4G NORTH AMERICA Minneapolis 2013'.
Conference banner for FOSS4G North America 2012 with a green background, a white star-like logo, and white text.
Logo with a mountain and a red flag, the text "FOSS4G DENVER 2011" is below.
Logo for the 2007 Free and Open Source Software for Geospatial (FOSS4G) Conference held in Victoria, Canada, September 24-27, 2007, featuring a stylized outline of a cityscape or landmark.