Claire

What Claire does

System Claire Co., Ltd. (株式会社システムクレール) is an independent Japanese software house founded in June 1990 by a group of engineers in Tokyo, headquartered in the Akihabara/Iwamotocho area of Chiyoda-ku. The firm provides custom software development, cloud services, CMS implementation, and open source solutions to enterprise and mid-market clients, with a horizontal (cross-industry) delivery model rather than vertical specialization. Its core technology stack spans Java, .NET Framework, PHP, Perl, and C, with services including open source consulting, hybrid cloud management via a unified portal, control system software for semiconductor and industrial equipment, and proprietary offerings such as an OSS-based email security system built on Docker and SaMMA.

The company's revenue model is predominantly project-based professional services supplemented by managed cloud services and a small advertising/content stream from its consumer media portal (HapiHapiRing). It sells directly to enterprise clients via website inquiries, phone outreach, and industry association channels (Tokyo Chamber of Commerce, Multimedia Information Cooperative), without resellers or distributors. Disclosed customer logos include NTT Resonant, NTT Data Shikoku, TIS, DTS, Kiyano Software, Tokyo Electron, Nikon Systems, and Nippon Telegraph and Telephone, indicating concentration in IT services, telecommunications, semiconductors, and optics/imaging.

The company has 11-50 employees, paid-in capital of 30 million yen (established via progressive increases from 1990 to 2001), no external funding or parent company, and is led by founder and President Takahashi Junji. It holds a Privacy Mark certification (since November 2006) and labor dispatch / employment placement licenses, and remains actively operating as of December 2024. The business is geographically concentrated in the Kanto region, with no disclosed international footprint.

Name

Claire

Legal name

株式会社システムクレール

Website

https://www.claire.co.jp/

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

11–50 employees

Short description

System Claire is an independent Tokyo-based Japanese software house founded in 1990, delivering custom software development, cloud services, CMS implementation, and open source solutions to enterprise clients across IT services, telecommunications, semiconductor, and optics sectors.

Ownership category

akta.pro rank

Product category

Custom Software Development and IT Services

NAICS

Computer Systems Design Services (541512), Custom Computer Programming Services (541511), Computer Facilities Management Services (541513)

SIC

Services-Computer Integrated Systems Design (7373), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Enterprise Application Modernization (Monolith-to-Modules, Domain Modernization) (BPAEAFAG)

akta.pro secondary industry

IT Program/Project Management (PMO) & Delivery Assurance (BPAEAAAO)

Keywords

• Custom software development
• Cloud infrastructure services
• Web application development
• Control system software
• Open source solutions

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Software Development: Custom software development for enterprise systems, web applications, control systems, and business applications. Revenue is generated through project-based contracts and system integration services.
2. Cloud Services: Cloud infrastructure design, construction, operation, and maintenance services. Provides hybrid cloud environments with unified management capabilities.
3. Media/Potal Operations: Operation of user-facing portal sites, including the 'HapiHapiRing' wedding ring portal site. Revenue from content-based services and advertising.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

System Claire is an independent Japanese software house that designs, develops, and maintains custom software and cloud solutions for enterprise clients. Its offerings span web application development, business application development, control system (semiconductor/equipment) software, hybrid cloud infrastructure design-build-operate services, CMS implementation, and open-source-based IT environments. The company also operates the HapiHapiRing media portal for wedding ring consumers as a supplementary business line.

Product overview

株式会社システムクレール (System Claire) is an independent software house offering comprehensive IT solutions including software development and cloud services. The company operates a portfolio of services organized around four main business domains: (1) Software Development - covering web applications, business applications, and control systems; (2) Network Infrastructure - including cloud services and network design/construction; (3) Media Business - operating the HapiHapiRing portal site for wedding rings; and (4) Open Source Solutions - leveraging OSS for customer environments. The product portfolio includes Web Application Development services for high-traffic and member-based sites, Business Application Development supporting Java, .NET, PHP, and mobile platforms, Control System Application Development for semiconductor and equipment control, Cloud Services providing hybrid cloud infrastructure, CMS Implementation and Development for content management, and Media Business through the HapiHapiRing portal.

Differentiator

Problem solved

Functional benefit

Brands

• ハピハピリング: Marriage and engagement ring portal site operated by System Claire as part of their media business.

Products and services

• Web Application Development Custom web application development using WEB technologies, providing dynamic internet resource functionality for enterprise customers. Covers planning, design, development, and operational maintenance with a focus on UX for stress-free optimal web application environments.
• Business Application Development Custom-made application development tailored to enterprise customer business operations. Covers enterprise information system planning, rapid development, and application operation and maintenance. Supports Perl, PHP, Java, Windows .NET Framework, and mobile/tablet application platforms.
• Control System Application Development Semiconductor control and various equipment control software development for industrial customers. Provides consulting, customization, development, system integration, and migration services including ERP system consulting and host-to-open system migration.
• Cloud Services Business environment optimization using internet infrastructure. Implements virtualization, standardization, and automation to improve IT infrastructure convenience and reduce costs. Provides hybrid cloud solutions with unified management portals enabling resource allocation optimization and workload portability between private and public clouds.
• CMS Implementation and Development Web content management system (CMS) consulting, implementation, and support service. One-stop service covering CMS selection, sizing, implementation, and post-implementation operations and maintenance for customers needing centralized web content management.
• Open Source Solutions Open source software solutions providing optimal customer environments across OS, middleware, database, and application layers. Services include OSS consulting, implementation, and support to help reduce total cost of ownership (TCO). Includes a proprietary open-source email security system using Docker and SaMMA for automatic attachment encryption.
• Media Business (HapiHapiRing Portal) Portal site operation providing useful information for users. Operates the HapiHapiRing portal site for engagement and wedding rings, helping couples find ring information and services. Generates advertising and content-based revenue.

Quantifiable outcome

• 34+ years of continuous operation and growth since 1990
• +1 more outcomes

Named customers8 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Four partnerships are on record, tiered minor.

• 株式会社フクリコ (Fukuriko Co., Ltd.)minorStrategic or Co-development Partner · 1 April 2009Business partnership established in April 2009 for collaborative projects and service expansion.
• 株式会社イデアシステム (Idea System Co., Ltd.)minorStrategic or Co-development Partner · 1 February 2009Business partnership established in February 2009 for collaborative system development and technology sharing.
• マルチメディア情報協同組合 (Multimedia Information Cooperative)minorOthersMember of the Multimedia Information Cooperative for industry collaboration and business development support.
• 東京商工会議所 (Tokyo Chamber of Commerce and Industry)minorOthersMember of Tokyo Chamber of Commerce for business networking and industry representation.

Scale indicators4 records

Recent moves12 records

Expansion highlights4 records

Direct peers

• TIS Inc. Major Japanese independent IT services company providing custom software development, system integration, and cloud services to enterprise clients. Listed as both a System Claire customer and a direct competitor for the same enterprise SI projects.
• DTS Corporation: Japanese independent IT services firm offering custom software development, system integration, and embedded/control system development — closely matching System Claire's full-stack, multi-industry delivery model.
• Internet Initiative Japan (IIJ): Japanese IT services and cloud/network infrastructure provider. Comparable on cloud services, network design/build, and managed infrastructure offerings that overlap System Claire's Cloud Services and Network Infrastructure practice.
• Future Corporation: Japanese IT consulting and systems integration firm with similar custom application development, cloud, and independent SI positioning. Comparable in horizontal, vendor-agnostic go-to-market.
• CAC Holdings Corporation: Mid-size Japanese independent SI group offering custom software development, cloud services, and outsourced IT services. Closely comparable in scale, independence, and horizontal multi-industry positioning.
• JBCC Holdings Inc. Japanese SI firm providing enterprise application development, cloud services, and managed services. Comparable independent SI profile with overlapping mid-market and enterprise customer base.
• Toyo Business Engineering Corporation: Japanese independent SI firm specializing in enterprise application development, ERP consulting, and modernization — directly comparable to System Claire's custom development and ERP/host-migration capabilities.

Broad incumbents

• BIPROGY Inc. Large Japanese SI firm (formerly Nihon Unisys / UNISYS Japan) delivering enterprise application development, cloud, and managed services across industries. Direct overlap on custom software and SI but at materially larger scale.
• NS Solutions Corporation: Industrial-vertical Japanese SI firm with strong control-system and enterprise application capability, including semiconductor manufacturing customers — direct overlap on System Claire's control-system practice.
• NTT Data Group: Largest Japanese SI group; both a customer of System Claire (via subsidiaries) and a broad incumbent competitor across custom software development, cloud services, and system integration.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Claire