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open-source developerengineering

Open Source Conference 2026 Hiroshima

オープンソースカンファレンス2026 Hiroshima
Open Source Conference 2026 Hiroshima
Date 2026.09.12
Venue Satellite Campus Hiroshima (Hiroshima Prefectural Culture Center 5F)
Fee Free with advance registration via connpass
Register on the official site

Overview

The Hiroshima stop of Open Source Conference, a free single-day event registered via connpass at Satellite Campus Hiroshima on the 5th floor of the Hiroshima Prefectural Culture Center, about 20 minutes by tram from Hiroshima Station. The previous edition ran 18 sessions across three tracks with 16 booths, lining up regionally rooted groups such as a game engine user group and the FOSS4G geospatial community.

Foundation

Founded
2004
Founder
Started in Tokyo in 2004 and produced by Begi.net Inc.

A regional edition of the open source festival that started in Tokyo in 2004. Local executive committees take turns hosting, keeping the format unchanged for over two decades - free admission, exhibits and seminars in a single day. The Hiroshima edition went through an online-hybrid phase during the pandemic and has since returned to an in-person format at Satellite Campus Hiroshima.

Transition

  1. 2004 First Open Source Conference held in Tokyo
  2. 2021 Held online on September 18 as Online/Hiroshima
  3. 2025 Held December 13 at Satellite Campus Hiroshima with 18 sessions across three tracks and 16 booths
  4. 2026 National tour continued with 730 attendees at Tokyo/Spring, over 400 in Hokkaido, and 220 in Sendai
  5. 2026 Scheduled for September 12 at Satellite Campus Hiroshima

Voices

Returning after 11 years away was stimulating, and first-hand accounts of generative AI use were interesting (from attendee survey comments in the official report, in Japanese)
The Hiroshima Game Engine User Group exhibit stood out, and the OSGeo Japan booth left visitors feeling that FOSS4G would make geospatial data easy to use in research (from exhibit comments in the same report, in Japanese)