IBM z/OS Operating System

IBM z/OS Operating System is a 64-bit enterprise operating system designed for IBM mainframes. It is an upgraded version of OS/390 geared for scalability, secure high-performance functionality, and running mission-critical applications. The operating system supports Web- and Java-based applications. 

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Products Related To IBM z/OS Operating System

Companies Currently Using IBM z/OS Operating System

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Company NameWebsiteHQ AddressCityStateZipCountryTop Level IndustrySub Level IndustryEmployeesRevenue (USD)PhoneLast Verified
Express Scripts 1 Express Way St. Louis MO 63121 US Healthcare Pharmaceuticals Above 10,000 Over $1,000,000,000 (314) 996-0900 a month ago
Vanguard 100 Vanguard Blvd Malvern PA 19355-2331 US Finance Brokerage Less than 10 From $200,000,000 to $499,999,999 - a month ago
Citi 388 Greenwich St New York NY 10013 US Finance Banking Above 10,000 Over $1,000,000,000 - a month ago
JPMorgan Chase & Co. 270 Park Ave New York NY 10017 US Finance Banking Above 10,000 Over $1,000,000,000 (212) 270-6000 a month ago
TSYS 1 TSYS Way Columbus GA 31901 US Finance Credit Cards & Transaction Processing Above 10,000 Over $1,000,000,000 (706) 644-6081 2 months ago
MAXIMUS 1891 Metro Center Dr Reston VA 20190 US Technical Software Development & Technical Consulting Above 10,000 Over $1,000,000,000 (703) 251-8500 2 months ago

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