Addamax was an American software company that developed trusted operating systems based on UNIX System V and Berkeley Software Distribution (BSD) variants of Unix.[1] Founded in 1986 in Champaign, Illinois, the company is best known for filing a high-profile antitrust lawsuit in 1991 against the Open Software Foundation (OSF). The company was dissolved in 1999.
| Industry | Software |
|---|---|
| Founded | January 13, 1986 |
| Founder | Peter A. Alsberg |
| Defunct | June 1, 1999 |
| Headquarters | Champaign, Illinois |
History
editAddamax was founded on January 13, 1986 in Champaign, Illinois by Peter A. Alsberg,[2] with a sales and development office in Gaithersburg, Maryland. The company focused on developing trusted, security-enhanced variants of Unix — operating systems built to meet government and military security classification standards.
In 1991, Addamax filed a antitrust lawsuit against the Open Software Foundation, Digital Equipment Corporation and Hewlett-Packard, alleging that OSF had created a cartel controlling the Unix operating system market and engaged in monopsony price fixing that forced the company out of business.[3][4] The case reached the US Court of Appeals for the First Circuit, which ruled on the matter in 1998. The company was dissolved on June 1, 1999.[2]
References
edit- ↑ 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.
- 1 2 "Business Entity Search: Addamax". Illinois Secretary of State. Retrieved August 20, 2025.
- ↑ "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.
- ↑ "U.S. 1st Circuit Court of Appeals: ADDAMAX CORPORATION v OPEN SOFTWARE". FindLaw. September 4, 1998. Retrieved March 11, 2012.
External links
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