Former IBM subsidiaries

American software company

service management brand of the IBM Software Group

Dehomag was a German subsidiary of IBM and later a standalone company with a monopoly in the German market before and during World War II. The word was a syllabic abbreviation for Deutsche Hollerith-Maschinen GmbH (). Hollerith refers to the German-American inventor of the technology of punched cards, Herman Hollerith. In April 1949 the company name was changed to IBM Deutschland.

joint venture which developed PowerPC microprocessors and software

Taligent Inc. (a portmanteau of "talent" and "intelligent") was an American software company. Based on the Pink object-oriented operating system conceived by Apple in 1988, Taligent Inc. was incorporated as an Apple/IBM partnership in 1992, and was dissolved into IBM in 1998.

company

defunct American software company (1991-1996)

weather service

discontinued wholly owned subsidiary of IBM

ILOG S.A. was an international software company purchased and incorporated into IBM, announced in January 2009. It created enterprise software products for supply chain, business rule management, visualization, and optimization. The main product line for Business Rules Management Systems (BRMS) has been rebranded as IBM Operational Decision Management. Many of the related components retain the ILOG brand as a part of their name.