| # | Company | Employees |
|---|---|---|
| 1 |
TrendAItrendmicro.com
Global cybersecurity company providing AI-powered protection and risk management for enterprises, governments, and consumers across diverse digital environments. |
8,060 |
| 2 |
freee.k.k.freee.co.jp
A leading provider of cloud-based accounting and HR software services in Japan, empowering SMBs to streamline operations and make data-driven decisions with ease |
1,757 |
| 3 |
Oracle Japan 日本オラクルoracle.com
Empowering individuals to capture data, derive insights, and unlock infinite possibilities through data-driven cloud services and support services |
1,375 |
| 4 |
Money Forward, Inc.corp.moneyforward.com
Empowering individuals to see money positively, broaden opportunities, and enrich lives for a better society |
1,151 |
| 5 |
Sansan株式会社corp-sansan.com
A company providing cloud-based business card management services for corporations and individuals, transforming encounters into valuable assets and creating new opportunities |
897 |
| 6 |
Works Applications Co., Ltd.worksap.co.jp
A company in Japan develops ERP software for financials and supply chain management, focusing on innovation with a next-generation solution AI WORKS |
622 |
| 7 |
SmartHR, Inc.smarthr.co.jp
The company provides cloud-based HR software "SmartHR" to streamline labor procedures, enhance talent management, and promote organizational productivity and work environment |
495 |
| 8 |
Cybozu, Inc.cybozu.co.jp
Developing software solutions like Kintone to promote collaborative workspaces, workstyle reform, and support local communities for a society focused on teamwork |
436 |
| 9 |
株式会社ビズリーチbizreach.co.jp
The company operates various internet services supporting the future of work, connecting talented individuals with companies through job-matching platforms and HR Tech solutions |
421 |
| 10 |
RAKUS Co, Ltd.rakus.co.jp
This company promotes digital transformation for SMEs and large companies in Japan to improve efficiency and benefit workers through IT services |
371 |
| 11 |
LayerXlayerx.co.jp
The company's mission is to digitize all economic activities and operates businesses in banking, fintech, AI, and LLM |
333 |
| 12 |
HENNGEhennge.com
A leading cloud-based security provider in Japan, offering additional security for companies transitioning systems to the cloud with high market share in Japan |
263 |
| 13 |
Bengo4.com,Inc.bengo4.com
The company provides a variety of legal services through portals like law, tax, and business lawyer sites, as well as a digital contract management platform |
202 |
| 14 |
jinjer株式会社jinjer.co.jp
Using the power of technology, the company aims to create a sustainable world by providing various HR solutions "as a Service" |
184 |
| 15 |
Chatworkkubell.com
Group chat app for global teams offering secure messaging, video chat, task management, and file sharing Available in multiple languages, used by thousands of companies worldwide |
176 |
| 16 |
Safie Inc.safie.link
A cloud-based video management platform for security, business improvement, and marketing, connecting with cameras and IoT devices to enable digital transformation |
176 |
| 17 |
株式会社ジーニーgeniee.co.jp
A Japanese technology company creates innovative products using cutting-edge adtech, expanding globally while aiming to be a leader in Asia and worldwide |
175 |
| 18 |
株式会社カケハシkakehashi.life
Specializing in pharmacy services, they promote the digitization of medication records and guidance to enhance the overall healthcare experience in Japan |
175 |
| 19 |
Sales Marker Co., Ltd.sales-marker.jp
Leading BtoB sales intelligence platform combining a database of 5 million corporate entities with intent data for precise targeting of high-conversion prospects |
173 |
| 20 |
RevComm Inc.revcomm.co.jp
A Tokyo-based startup developing Voice x AI-enabled cloud services with a mission to spark innovation globally, offering the AI-enabled cloud IP phone "MiiTel" |
167 |
| 21 |
MicroAd, Inc.microad.co.jp
A leading ad platform in Japan offering DSP and SSP solutions to optimize ad serving for advertisers and maximize revenue for publishers Expanding globally |
162 |
| 22 |
株式会社ログラスloglass.jp
Loglass offers a "management control cloud" that centralizes scattered business data, integrating budgets, forecasts, performance, and KPIs to streamline management processes |
161 |
| 23 |
TableChecktablecheck.com
A global hospitality platform providing booking and guest experience solutions for restaurants and hotels, driving long-term success and guest loyalty |
160 |
| 24 |
株式会社カオナビcorp.kaonavi.jp
Develops and offers a cloud-based HR management tool aiming to revolutionize organizational management practices and define future work standards through innovation |
153 |
| 25 |
HRBrainhrbrain.jp
They offer HRBrain, a cloud-based HR management system focused on simplifying and streamlining HR evaluation processes for businesses |
124 |
| 26 |
ABEJA, Inc.abejainc.com
A leading innovator in AI technology, leveraging IoT and Big Data to tackle global challenges with a diverse team from six countries |
109 |
| 27 | 107 | |
| 28 |
株式会社マツリカ(Mazrica Inc.)mazrica.com
It develops and provides a sales and marketing platform, Mazrica sales, enhancing productivity and creativity in work environments through technology. |
75 |
| 29 |
Unipos株式会社unipos.me
A peer recognition and engagement suite driving culture, values, productivity, and collaboration through real-time data and employee rewards worldwide |
65 |
| 30 |
Alphaus Inc.alphaus.cloud
A tech startup offering cloud financial management tools to analyze, allocate, and optimize cloud spend for enterprises across AWS, Azure, and Google Cloud |
53 |
| 31 |
株式会社iCAREicare-carely.co.jp
The company provides corporate healthcare services focusing on online health consultation, aiming to create a healthier environment for individuals and organizations |
44 |
| 32 |
Lazuli Inc.lazuli.ninja
A start-up focusing on developing a SaaS business specializing in a cloud-based product master for various industries |
32 |
| 33 |
Sider Reviewsider.review
An automated code review tool analyzing various languages for non-standard code, bugs, and security flaws, supporting faster development cycles |
25 |
| 34 |
Xtra, Inc.xtra.global
The company offers crowdsourcing services connecting corporate clients with freelancers, as well as AI-powered machine translation services for optimized operations |
11 |
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 9, 2026.
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