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. 

COMPANIES WE TRACK USING IBM z/OS Operating System
5,562
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Companies Currently Using IBM z/OS Operating System

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Company NameWebsiteHQ AddressCityStateZipCountryTop Level IndustrySub Level IndustryEmployeesRevenue (USD)PhoneLast Verified
Citi citigroup.com 388 Greenwich St New York NY - US Finance Banking Above 10,000 Over $1,000,000,000 (212) 559-1000 a month ago
JPMorgan Chase jpmorganchase.com 270 Park Ave New York NY - US Finance Banking Above 10,000 Over $1,000,000,000 (212) 270-6000 a month ago
TSYS tsys.com One TSYS Way Columbus GA - US Finance Credit Cards & Transaction Processing Above 10,000 Over $1,000,000,000 (706) 644-6081 a month ago
Vanguard investor.vanguard.com 100 Vanguard Blvd Malvern PA 19355-2331 US Finance Brokerage From 1,000 to 4,999 From $200,000,000 to $499,999,999 - 2 months ago
J.P. Morgan jpmorgan.com 277 Park Ave New York NY 10172 US Finance Banking Above 10,000 Over $1,000,000,000 - 2 months ago
Morgan Stanley morganstanley.com 1585 Broadway Ave New York NY - US Finance Banking Above 10,000 Over $1,000,000,000 (212) 761-4000 a month ago

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