Top 5 Largest Software Companies in Japan

  1. top 1 M3, Inc
  2. top 2 Oracle Corp Japan
  3. top 3 Trend Micro
  4. top 4 SCSK Corporation
  5. top 5 OPTiM

SCSK Corporation

SCSK Corporation is a Japanese information technology firm based in Tokyo that provides IT services and computer software. Outside of Japan, it is most known for its 1984 acquisition of Sega, which resulted in the sale to Sammy in 2004, establishing Sega Sammy Holdings. The SCSK Group provides its know-how and various IT solutions it has amassed over the years in addressing the issues of clients and society. Since 1989, the firm has been listed on the Tokyo Stock Exchange under the name Sumitomo Computer Service Corporation.


In Japan, the company provides system integration, cloud computing, information security, and computer software to businesses, mostly on a B2B basis. SCSK Corporation's business type and scope are comparable to that of Itochu Techno-Solutions, Uniadex, and Mitsui Knowledge Industry, all of whom specialize in IT services. Its specialists are knowledgeable in problem-solving across all industries gather and coordinate their experience to provide clients with the best solutions. The company has been providing the full line-up of IT services necessary for business for fifty years, resolving client issues at over 8,000 companies.


Founded: 1968
Headquarters: Tokyo, Japan

Website: https://www.scsk.jp/

Screenshot of scsk.jp
Screenshot of scsk.jp
SCSK GROUP's Youtube Channel

Top 5 Largest Software Companies in Japan

  1. top 1 M3, Inc
  2. top 2 Oracle Corp Japan
  3. top 3 Trend Micro
  4. top 4 SCSK Corporation
  5. top 5 OPTiM

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