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
5,706
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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
TSYS tsys.com One 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
Citi citigroup.com 388 Greenwich St New York NY 10013-2375 US Finance Banking Above 10,000 Over $1,000,000,000 (212) 559-1000 2 months ago
C&S Wholesale Grocers cswg.com 7 Corporate Dr Keene NH 03431 US Retail Department Stores & Superstores Above 10,000 Over $1,000,000,000 - 2 months ago
Laboratory Corporation of America labcorp.com 358 S. Main St Burlington NC 27215 US Healthcare Pharmaceuticals Above 10,000 Over $1,000,000,000 (336) 229-1127 2 months ago
Penn Mutual pennmutual.com 600 Dresher Rd Horsham PA 19044 US Unclassified Establishments Nonclassifiable Establishments From 1,000 to 4,999 Over $1,000,000,000 (215) 956-8000 2 months ago
Genome International Corp. genome.com 8000 Excelsior Drive Ste. 202 Madison WI 53717 US Technical Software Development & Technical Consulting From 50 to 199 From $1,000,000 to $9,999,999 - 2 months ago

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