Conferences / Software engineering

FOSS4G

At a glance

Next event: Aug 23–29, 2027Bristol, United Kingdom
Call for papers: No public call found
Audience: 828 attendees2026 · source
Tickets: ¥3,000–¥80,00010 prices, 2026
Sponsorship: ¥500,000–¥5,000,0005 packages, 2026
Sponsors: 34 in 2026▲ +21% vs 2025 (28)
Program freshness: 94#77 of 143 · 9% reruns
Similar conferences: FOSS4G Europe, FOSS4G North America, CNG Forum

Organizer: OSGeo (Open Source Geospatial Foundation), with a local organizing committee each year
Category: Software engineering
Website: foss4g.org
Social: X / Twitter · Mastodon · YouTube
Typical place: 7 cities
Topics: Data engineering

OSGeo's annual global conference for open-source geospatial software (QGIS, PostGIS, GDAL, GeoServer, OpenLayers and others), with workshops, general tracks, an academic track and a community sprint. Each edition has its own site at <year>.foss4g.org and its own local organizers. 2020 Calgary was cancelled (COVID-19). 2021 Buenos Aires was online-only (about 1,899 online registrations) and is not recorded as an edition. 2022 Florence was hybrid. Regional events (FOSS4G Europe, FOSS4G North America and others) are separate series. Social accounts are the conference's own; LinkedIn pages exist only per edition (e.g. https://www.linkedin.com/showcase/foss4g2027/). Attendance figures come from OSGeo's FOSS4G year-over-year metrics sheet linked from the OSGeo wiki.

Speakers it attracts

The 668 people who spoke at FOSS4G in 2024–2026, by their record at the other conferences we track.

2%experienced speakers: talks at 3+ other conferences · more than 16% of conferences

7have keynoted another conference

77%no other tracked talks: new voices, or speakers from outside the circuit

Where they work (268 with a known employer type)Vendors 35%Universities & research 23%Other 22%Consultancies 16%Practitioners (end-user companies) 3%Media & community 1%

Most established speakers

Tom Kralidiskeynote here · Meteorological Service of CanadaKeynoted 1 other conference, spoke at 3: FOSS4G Europe, FOSS4G North America, GeoPython
Jeroen Tichelerkeynote here · GeoCat BVKeynoted 1 other conference, spoke at 2: FOSS4G Europe, FOSS4G North America
Kyle Barron · Development SeedSpoke at 5 other conferences: SciPy Conference (Scientific Computing with Python), SatSummit, CNG Forum (Cloud-Native Geospatial Conference)…
Bill Cook · EukaryaKeynoted 1 other conference: Distributed SQL Summit
Celine Jacquinkeynote hereKeynoted 1 other conference: State of the Map
Codrina Ilie · TerrasignaKeynoted 1 other conference: FOSS4G Europe
Julia SignellSpoke at 4 other conferences: PyData, FOSS4G North America, SciPy Conference (Scientific Computing with Python)…
TATIANA PARÁ · IFPAKeynoted 1 other conference: State of the Map
Vicky VergaraKeynoted 1 other conference: FOSS4G North America
Alexander KmochSpoke at 3 other conferences: SciPy Conference (Scientific Computing with Python), JuliaCon, FOSS4G Europe
Chris Stoner · Amazon Web ServicesSpoke at 3 other conferences: AWS re:Invent, SatSummit, CNG Forum (Cloud-Native Geospatial Conference)
Dhavide AruliahSpoke at 3 other conferences: PyData, SciPy Conference (Scientific Computing with Python), JupyterCon

Events72019–2027

Sponsoring companies219287 sponsorships

Speaker appearances2,679

Activity by year

Sponsor companies per year

Distinct companies sponsoring any event that year.

Complete list

Speakers

Speakers per year

Distinct people on stage at any event that year; same year axis as sponsors.

Events

Dates	Event	Place	Format / status	Attendance	Sponsors	Speakers
Aug 23–29, 2027	FOSS4G 2027	Bristol, United Kingdom	Announced	—	5	—
Aug 30, 2026 – Sep 5, 2026	FOSS4G 2026	Hiroshima, Japan		828	34	588
Nov 17–23, 2025	FOSS4G 2025	Auckland, New Zealand		400	28	332
Dec 2–8, 2024	FOSS4G 2024	Belém, Brazil		366	26	274
Jun 26, 2023 – Jul 2, 2023	FOSS4G 2023	Prizren, Kosovo		683	62	498
Aug 22–28, 2022	FOSS4G 2022	Florence, Italy		1,303	43	642
Aug 26–31, 2019	FOSS4G 2019	Bucharest, Romania		1,069	89	345

Attendance over time

Reported attendance for 6 of 7 events; figures are as published by the organizer.

Most frequent speaker companies

Speaker appearances across all events, by the speaker's company.

Similar conferences

Conferences with the most similar speaker mix: their speakers come from the same companies. Bars are cosine similarity on a 0–1 scale; between conferences even the closest pairs share only part of their crowd.

9 Cluster: Esri · Development Seed · GeoSolutions crowd →