IBM

Ranked #70 on the list Best Operating System Developer of All Time

6.50
Based on 2 votes

About IBM

  • Operating Systems Developed: PC-DOS

International Business Machines Corporation, or IBM, is an American multinational technology and consulting corporation, with headquarters in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and offers infrastructure, hosting and consulting services in areas ranging from mainframe computers to nanotechnology. The company was founded in 1911 as the Computing Tabulating Recording Company (CTR) through a merger of three companies: the Tabulating Machine Company, the International Time Recording Company, and the Computing Scale Company. CTR adopted the name International Business Machines in 1924, using a name previously designated to CTR's subsidiary in Canada and later South America. Its distinctive culture and product branding has given it the nickname Big Blue. In 2012, Fortune ranked IBM the #2 largest U.S. firm in terms of number of employees (433,362), the #4 largest in terms of market capitalization, the #9 most profitable, and the #19 largest firm in terms of revenue. Globally, the company was ranked the #31 largest in terms of revenue by Forbes for 2011. Other rankings for 2011/2012 include #1 company for leaders (Fortune), #1 green

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