7–9 Dec 2026 · Tokyo, JP

Open Source Summit Japan

Open Source Summit Japan is a multi-day professional gathering for open source developers, technologists, maintainers, and community leaders to collaborate, share knowledge, and advance open source projects. The event includes multiple thematic tracks (e.g., Automotive Linux, Cloud & Orchestration, Embedded Linux, Linux, Open AI + Data) covering code, community, tooling, security, and governance. It serves technologists, community managers, legal/compliance and OSPO staff, and others involved in open source ecosystems, with sessions for learning, problem-solving, and cross-domain collaboration.

Last updated

Dates
7–9 Dec 2026
Venue
Toranomon Hills Forum
Location
Tokyo, JP
Frequency
Annual
Audience
Trade
Duration
3 days
Scale
Small
Exhibitors
32Estimate
IT & SoftwareEnvironment & Water
Event website

Compiled from public sources and periodically reviewed and updated. This information is provided for general guidance only and may be incomplete or out of date — please verify all details directly with the organizer or venue before relying on them.

About Open Source Summit Japan

Open Source Summit Japan is a trade show for the IT & Software and Environment & Water industries, held in Tokyo, Japan. The 2026 edition runs 7–9 Dec 2026 at Toranomon Hills Forum. It brings together an estimated 32 exhibitors. Event Scout has indexed 32 exhibiting companies for the event so far.

Known editions

Venue

Toranomon Hills Forum

Tokyo, Tokyo, JP

Who exhibits at Open Source Summit Japan

We've captured 32 exhibitors for Open Source Summit Japan (roster as of 2022). They span 2 countries, 100% of them based outside Japan.

Where exhibitors are based

Exhibitors' head-office countries, most-represented first.

  • Ireland50%·1
  • Portugal50%·1

Based on 2 exhibitors with a known head-office country.

What exhibitors do

The industries the exhibitor base works in, by share of the roster.

  • Services60%·3
  • Construction20%·1
  • Energy Electronics20%·1
  • Food Beverage20%·1
  • Healthcare Pharma20%·1

Based on 5 exhibitors with an industry label — a company can carry several, so shares can total over 100%.

Exclusivity

0%Class Gof exhibitors exhibit nowhere else we track

Ubiquitous roster — almost all of these exhibitors appear at many other events we track.

Cross-referenced against 32 exhibitors in our event graph.

International reach

100%Class Aof exhibitors are based abroad

Truly global — the exhibitor base spans the world.

Exhibitor calibre

Publicly listed0%·0

listed companies

Large enterprises0%·0

1,000+ employees

Of 1 exhibitors whose company size we know.

Compiled from public sources and periodically reviewed and updated. This information is provided for general guidance only and may be incomplete or out of date — please verify all details directly with the organizer or venue before relying on them.

Open Source Summit Japan 2026 exhibitor list

So far, 30+ exhibiting companies have been indexed for Open Source Summit Japan. They span industries including software-it,energy-electronics,construction, services and food-beverage. The preview below shows a sample of the indexed roster; the full list is available through Event Scout.

  • Convince Your Boss
  • Winter & Company
  • LINK
  • CO-LOCATED EVENTS
  • Who's Coming
  • Child Care
  • Evening Events
  • Onsite Activities
  • Visa Letter Request
  • CloudOpen
  • Community Leadership Conference
  • ContainerCon
  • Diversity & Inclusion
  • Diversity Empowerment Summit
  • Embedded IoT Summit
  • Embedded Linux Conference
  • Emerging OS Forum
  • Featured Keynote Speakers
  • Kid’s Day

+ 7 more exhibitors

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Frequently asked questions

When is Open Source Summit Japan 2026?
Open Source Summit Japan 2026 runs 7–9 Dec 2026 at Toranomon Hills Forum.
Where is Open Source Summit Japan held?
Open Source Summit Japan is held at Toranomon Hills Forum in Tokyo, Japan.
How many exhibitors does Open Source Summit Japan have?
Open Source Summit Japan counts an estimated 32 exhibitors. Event Scout has indexed 32 exhibiting companies so far.
Who exhibits at Open Source Summit Japan?
Indexed exhibitors include Critical Software, Scholarships, About GlobalSecurity.org and Code of Conduct Nutrition. The event spans the IT & Software and Environment & Water sectors.
Is Open Source Summit Japan worth attending?
Open Source Summit Japan is a trade show for the IT & Software and Environment & Water industries, so it is most relevant to exhibitors and buyers in those industries. It brings together an estimated 32 exhibitors. Whether it is worth attending depends on your objectives, but its scale and sector focus are a useful guide.
How do I get the Open Source Summit Japan exhibitor list?
Event Scout has indexed 32 companies exhibiting at Open Source Summit Japan so far. A sample is shown in the exhibitor-list section on this page, and the full roster is available through Event Scout.

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