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The 34 largest SaaS companies in Japan

Tamtam tracks 34 SaaS companies headquartered in Japan. This list ranks all of them by number of employees on LinkedIn, led by TrendAI, freee.k.k. and Oracle Japan 日本オラクル. Their median headcount is 175. Half of them were founded in 2012 or later. The most common headquarters are Tokyo (3).

🇯🇵 Japan34 companiesUpdated Oct 9, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
TrendAItrendmicro.com

Global cybersecurity company providing AI-powered protection and risk management for enterprises, governments, and consumers across diverse digital environments.

Computer and Network Security 🇯🇵 Tokyo 8,060 n/a
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

IT Services and IT Consulting 🇯🇵 Shinagawa 1,757 2012
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

IT Services and IT Consulting 🇯🇵 Minato-ku 1,375 1985
4
Money Forward, Inc.corp.moneyforward.com

Empowering individuals to see money positively, broaden opportunities, and enrich lives for a better society

Technology, Information and Internet 🇯🇵 Minato 1,151 2012
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

IT Services and IT Consulting 🇯🇵 Shibuya 897 2007
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

IT Services and IT Consulting 🇯🇵 Chiyoda-ku 622 1996
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

IT Services and IT Consulting 🇯🇵 Minato 495 2013
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

IT Services and IT Consulting 🇯🇵 436 1997
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

Technology, Information and Internet 🇯🇵 421 n/a
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

IT Services and IT Consulting 🇯🇵 Shibuya 371 2000
11
LayerXlayerx.co.jp

The company's mission is to digitize all economic activities and operates businesses in banking, fintech, AI, and LLM

Technology, Information and Internet 🇯🇵 333 2018
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

IT Services and IT Consulting 🇯🇵 Shibuya 263 1996
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

Technology, Information and Internet 🇯🇵 Minato 202 2005
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"

Software Development 🇯🇵 Shinjuku 184 2016
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

Software Development 🇯🇵 Minato 176 2004
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

Software Development 🇯🇵 Shinagawa 176 2014
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

Advertising Services 🇯🇵 Shinjuku 175 n/a
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

IT Services and IT Consulting 🇯🇵 Minato 175 2016
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

Software Development 🇯🇵 Shibuya 173 2021
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"

Telecommunications 🇯🇵 Chiyoda-ku 167 2017
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

Advertising Services 🇯🇵 Shibuya 162 2007
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

IT Services and IT Consulting 🇯🇵 Minato 161 n/a
23
TableChecktablecheck.com

A global hospitality platform providing booking and guest experience solutions for restaurants and hotels, driving long-term success and guest loyalty

Software Development 🇯🇵 Chuo-ku 160 2011
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

IT Services and IT Consulting 🇯🇵 Shibuya 153 n/a
25
HRBrainhrbrain.jp

They offer HRBrain, a cloud-based HR management system focused on simplifying and streamlining HR evaluation processes for businesses

Software Development 🇯🇵 Minato 124 2016
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

Software Development 🇯🇵 Minato-ku 109 2012
27
UMUumu.com

It is an AI-powered platform that enhances employee performance and revenue through knowledge reinforcement and on-the-job coaching for companies.

Software Development 🇯🇵 Tokyo 107 2015
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.

IT Services and IT Consulting 🇯🇵 Chiyoda 75 2015
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

Software Development 🇯🇵 Minato 65 2017
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

Technology, Information and Internet 🇯🇵 Tokyo 53 2015
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

IT Services and IT Consulting 🇯🇵 Shibuya 44 2011
32
Lazuli Inc.lazuli.ninja

A start-up focusing on developing a SaaS business specializing in a cloud-based product master for various industries

Information Services 🇯🇵 Shibuya-ku 32 2020
33
Sider Reviewsider.review

An automated code review tool analyzing various languages for non-standard code, bugs, and security flaws, supporting faster development cycles

IT Services and IT Consulting 🇯🇵 Shibuya-ku 25 2012
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

Technology, Information and Internet 🇯🇵 Chiyoda-ku 11 2007

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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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