Top API Companies in Japan (2026 Update)
Browse API companies in Japan with up-to-date profiles — funding rounds, investors, hiring, and expansion signals. Find recently funded and growing companies. Updated 2026.
Showing 6 Companies
| Company | Location | Founded | Industry | Services | Target Customers | Business Model | Revenue Model | Founders | Employees | Funding Stage | |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
株式会社TWOSTONE&Sons
～エンジニアと共に、未来に改革を～ あらゆるエンジニアが… |
Japan
|
2013 |
API
IT
+4
|
— | — | — | — | — | 111 | Corporate Round |
|
|
Gengo
Professional online translation services in 300 languag… |
Japan
|
2008 |
API
Education
+1
|
— | — | — | — | — | 968 | Series C |
|
|
ListenField
Gather, process and analyze multilayer data to provide… |
Japan
|
2017 |
AI
API
+3
|
— | — | — | — | — | 22 | Non Equity Assistance |
|
|
株式会社スリーシェイク
Simplify Infrastructure and Innovate Further |
Japan
|
2015 |
API
Advertising
+3
|
— | — | — | — | — | 62 | — |
|
|
Kyuzan Inc.
We build NFT games and tools for brands and creators to… |
Japan
|
2018 |
API
Blockchain
+5
|
— | — | — | — | — | 5 | — |
|
|
Pocketpair, Inc.
A top indie game company in Japan |
Japan
|
2015 |
API
Gaming
+1
|
— | — | — | — | — | 12 | — |
