Open Developers Conference 2026
Overview
A developer-focused open source conference run by the OSPN community behind the Open Source Conference (OSC) series. Billed as an "open source culture festival," it packs seminars, hands-on sessions, and community booths on DevOps, dev tools, and cloud into a single free day. Modest in size at 100-plus attendees, its strength since 2018 has been direct access to the developers behind OSS projects.
Speakers from past editions
- Go Maeda (CEO, Far End Technologies; spoke in 2025)
- Ryosuke Momoi (baserCMS Users Association; spoke in 2025)
Foundation
- Founded
- 2018
- Founder
- OSPN (Open Source People Network) community
Launched in 2018 by the OSPN community behind the nationwide OSC series as a sister event focused specifically on development. After an online period during the pandemic, it returned to in-person format in 2023.
Transition
- 2018 First edition held as an open source culture festival
- 2023 In-person format resumed after four years
- 2025 Held at docomo R&D OPEN LAB ODAIBA
- 2026 Held at Nihon Kogakuin College, Kamata Campus
Voices
A Redmine-community company candidly reviews its ODC2025 booth and talk, noting insights from attendee surveys alongside the challenge of reaching non-users (from Far End Technologies' report, in Japanese)
An individual attendee's ODC2024 report describes enjoying the OSC 20th-anniversary milestone with community peers (from sakaik's report, in Japanese)
Sponsors
協賛
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株式会社NTTデータ -
株式会社SRA OSS -
サイバートラスト株式会社 -
日本仮想化技術株式会社 -
株式会社インプリム -
MySQL Community Team (Oracle Corporation) -
NEC -
エイチスリーパートナーズ有限会社 -
株式会社びぎねっと -
株式会社創夢 -
＠IT -
SBクリエイティブ株式会社 -
ThinkIT -
株式会社インプレス -
株式会社オライリー・ジャパン -
株式会社技術評論社(Software Design) -
株式会社翔泳社 - 株式会社日経BP
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株式会社マイナビ出版
Source: official sponsor list (as of October 9, 2026)
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