What ADeX does

ADeX (株式会社アデックス) is an independent Japanese custom software development firm headquartered in Yokohama, Kanagawa-ku, founded February 5, 2002. The company designs, develops, and maintains bespoke enterprise software for clients concentrated in shipping (including the Kawasaki Kisen Kaisha Group), life insurance, and the IT services sector, operating primarily across the Yokohama and Tokyo-Kanagawa region with an employee base of 11-50.

The firm's technical scope spans the full software lifecycle on Windows and UNIX environments, using C, C++, COBOL, VB, ASP, VC++, .NET, and Java against Oracle, SQL Server, and Access data tiers. This combination of legacy (COBOL, VB/ASP) and modern (.NET, Java) stacks positions ADeX as a maintenance and modernization provider for incumbent enterprise systems rather than a greenfield product builder. The firm also maintains a workforce holding Oracle, Java, and Microsoft certifications, supporting its delivery credibility.

ADeX operates three revenue streams: project-based custom software design and development, ongoing system maintenance contracts, and a PC school providing end-user training. In June 2022 it obtained a labor dispatch license (派14-303378), enabling a fourth line in IT staffing dispatch, and in July 2021 raised paid-in capital to ¥15M. The company's go-to-market is relationship-led, anchored by named enterprise clients such as Kawasaki Kisen Kaisha and partner firms including i-NET, Nihon Data Skill, Fresco, and Takachiho Soft. Leadership rests with Representative Director and President Suzuki Yasuhito (鈴木康仁).

Name

ADeX

Legal name

株式会社アデックス

Website

https://adex-net.info

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

11–50 employees

Short description

ADeX (株式会社アデックス) is an independent Japanese custom software development firm based in Yokohama that designs, develops, and maintains enterprise systems for clients in shipping, insurance, and IT services across the Tokyo-Kanagawa region, and operates a PC training school.

Ownership category

akta.pro rank

Headquarters

HQ city

Yokohama-shi

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Custom Software Development: Design, development, and maintenance of custom software for enterprise clients, including systems for shipping companies and insurance firms. Revenue is project-based and likely fixed-price or time-and-materials.
2. Computer School Operation: Operation of a computer school providing IT training and education services, generating recurring revenue from course enrollments.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

ADeX (株式会社アデックス) is an independent software development company that designs, develops, and maintains custom software systems for enterprise clients in industries such as shipping/maritime and life insurance. Its technology stack spans Windows and UNIX environments using C, C++, COBOL, VB, ASP, VC, .Net, and Java, supported by Oracle, SQL Server, and Access databases. The company additionally operates a computer training school and provides licensed labor dispatch (staffing) services.

Product overview

ADeX is an independent software development company offering custom software design, development, and maintenance services. The company operates two main offerings: software development services for enterprise clients (including maritime and insurance sectors) and PC school operations for computer literacy training. No unified platform or modular product architecture is indicated; the company provides professional software development services as its primary business.

Differentiator

Problem solved

Functional benefit

Products and services

• Software Development Services
• PC School Operations (Computer Literacy Training)
• Labor Dispatch (Staffing) Services

Named customers6 records

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• 関東ITソフトウェア健康保険組合 (Kanto IT Software Health Insurance Association)minorOthersEmployee welfare benefit partner. ADeX participates in this health insurance association which provides employee benefits including access to recreational and accommodation facilities.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• BIPROGY: One of Japan's established system integrators (formerly UNISYS Japan), offering end-to-end custom software development, system integration, and IT services across multiple verticals including finance and insurance—directly overlapping with ADeX's enterprise custom-development business but at vastly greater scale.
• Otsuka Corporation: Large Japanese IT services and solutions provider offering custom development, packaged software, and IT staffing across SMB and enterprise segments. Comparable custom-development offering but with nationwide coverage and a much broader portfolio than ADeX.
• Internet Initiative Japan (IIJ): Major Japanese IT services and network solutions provider with systems integration and custom development offerings for enterprise clients, providing a comparable technical-services profile at substantially larger scale.
• NTT Data Group: Japan's largest IT services firm and global SI, offering custom software development, system integration, and consulting across virtually every enterprise vertical—the dominant incumbent whose procurement decisions shape the demand pool ADeX competes within.
• TIS Inc. Major Japanese IT services group providing custom software development, outsourcing, and solution services to financial, manufacturing, and public-sector clients. Comparable in offering (custom build + maintenance) but far larger and more diversified than ADeX.

Direct peers

• Nulab: Independent Japanese software company offering both product (collaboration tools) and custom development services to enterprise clients—comparable as a Japan-based independent software firm with services-plus-product orientation.
• SRA Holdings: Mid-sized Japanese independent IT services group whose subsidiaries develop custom enterprise software and provide consulting across financial, public, and industrial sectors—the closest analog to ADeX as an independent, multi-stack custom development firm in the Japanese mid-market.
• Japan System Techniques (JAST): Japanese IT services company focused on custom system development, packaged solution integration, and consulting for enterprises, with comparable headcount scale and a similar enterprise-services orientation to ADeX.
• WingArc1st: Independent Japanese software company delivering both packaged solutions and custom enterprise development, with similar vertical exposure to finance, manufacturing, and distribution as ADeX.
• Future Corporation: Independent Japanese IT consulting and systems integration firm offering custom software development and IT advisory to enterprise clients, especially in finance and distribution—directly comparable as an independent, mid-sized custom-development shop.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat2 records

Key risks6 records

Key highlights6 records

Customer concentration

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 ADeX