In modern B2B sales and data intelligence, access to verified, comprehensive corporate data is vital. We built Kigyou-list (企業リスト) — an all-in-one corporate intelligence and sales DX platform indexing over 5 million registered companies across Japan.

Official Platform: https://kigyoulist.com/ja

1. Multi-Tiered Public Open Data Aggregation

Kigyou-list automates data ingestion and entity resolution across multiple public governmental and financial sources:

  1. National Tax Agency (国税庁 法人番号): 100% full coverage of all registered corporations in Japan, standardizing legal entity identifiers (13-digit corporate numbers), corporate history, and corporate registry status.
  2. FSA EDINET (金融庁 有価証券報告書): Real-time extraction of annual securities reports for listed enterprises, capturing revenue, net profit, employee count, and average annual compensation.
  3. Government Electronic Procurement (GEPS - 政府電子調達システム): Indexing public procurement contracts and bidding awards across national ministries and local governments.

2. Technical Stack & Architecture

  • Frontend: Next.js (App Router), TypeScript, Tailwind CSS, Edge caching
  • Backend & Data Pipeline: Python, PostgreSQL with hybrid CQRS query caching, Celery worker orchestration
  • Search & Filter Engine: Multi-attribute filtering across 47 prefectures, capital size, employee tiers, and public procurement signals.

3. Explore & Compare

Operated by: TQC Inc. (TQC株式会社, Minami-Ikebukuro 2-33-6 Sato Bldg 3F, Tokyo, Japan / CEO: Masayuki Kurimoto)