Addamax was an American software company that developed Trusted operating systems based on UNIX System V and Berkeley Software Distribution (BSD) variants of UNIX. The company was founded in 1986 in Champaign, Illinois by Peter A. Alsberg and had a sales and development office in Gaithersburg, Maryland.
Addamax filed a high-profile antitrust lawsuit in 1991 against the Open Software Foundation (OSF), alleging that OSF created a cartel that controlled the UNIX operating system and exerted monopsony price fixing and led to the company going out of business.
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References
Wong, R. M. (1990). "A comparison of secure UNIX operating systems". [1990] Proceedings of the Sixth Annual Computer Security Applications Conference. Institute of Electrical and Electronics Engineers. pp. 322–333. doi:10.1109/CSAC.1990.143794. ISBN 0-8186-2105-2. S2CID 21640545. 0-8186-2105-2 ↩
"Addamax Corp. v Open Software Foundation, Digital Equipment Corporation and Hewlett-Packard Company". GTW. Archived from the original on January 6, 2009. Retrieved March 11, 2012. https://web.archive.org/web/20090106122820/http://www.gtwassociates.com/answers/Cases/ADDAMAX.htm ↩
"U.S. 1st Circuit Court of Appeals: ADDAMAX CORPORATION v OPEN SOFTWARE". FindLaw. September 4, 1998. Retrieved March 11, 2012. http://caselaw.lp.findlaw.com/scripts/getcase.pl?navby=search&case=/data2/circs/1st/971807.html ↩