The Free and Open Source Software for Geospatial (FOSS4G) conference series, hosted in partnership with OSGeo, brings together open source geospatial users, software developers, decision makers and researchers from around the world.
The FOSS4G 2025 conference in Auckland, New Zealand, will be a vibrant gathering that fosters collaboration and celebrates innovation in the exciting world of free and open source software for geospatial.
The event will feature workshops, technical sessions, keynote addresses, ‘lightning talks,’ code sprints and community events, social events and a ‘women in geospatial’ breakfast.
It is expected that the full program will be made available in August 2025.


The International Society for Photogrammetry and Remote Sensing’s (ISPRS) XXV Congress will be held in Toronto, Canada, from 4 to 11 July 2026. This will be the first ISPRS Congress to held in Canada since the event in Ottawa in 1972, so it will be an historic occasion.
The event will bring together researchers, practitioners and industry leaders from around the globe to explore the latest advancements, trends and applications in photogrammetry and remote sensing.
The theme of the Congress, From Imagery to Understanding, captures the role of ISPRS and its scientific activities, and will culminate in a legacy project to create materials that can be used by the ISPRS community to better promote to funding agencies and others the important role that it plays in the world’s economic and environmental activities.
The Congress will run in parallel with the 47th Canadian Symposium on Remote Sensing (CSRS).
The abstract submission deadline has been extended to 17 November 2025, and early bird registration is now available.