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UniSoft Corporation
IndustrySoftware development
FoundedOctober 5, 1981; 42 years ago (1981-10-05) in Emeryville, California
United States

UniSoft Corporation is an American software developer established in 1981, originally focused on the development of Unix ports for various computer architectures. Based in Millbrae, California, it now builds standardization and conformance testing applications for the digital television market.


UniSoft was founded on October 5, 1981, in Emeryville, California.[1] Their original business was Unix development, and they were soon recognized as one of the early implementers of Unix for the emerging 16-bit microcomputer market.[2] By 1989, they had completed over 225 Unix implementations on various hardware platforms, which was estimated to have been about 65% of all such ports.[3][4] UniSoft's port of Version 7 Unix was the first operating system for Sun Microsystems' Sun-1 workstations and servers.[5] It also developed Apple Inc.'s Unix variant, A/UX, for the Apple Macintosh II.[6] UniSoft UniPlus System V served as the basis of Silicon Graphics' GL2 operating system, which eventually evolved into IRIX.[7]

In 1991, the company moved to its current offices in Millbrae, California.[1] UniSoft shifted its focus to the television industry in 1997, in order to address standards compliant software in that market. It now works solely in development, testing, and broadcast tools for digital television.[4]

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  1. ^ a b "Business Search - Results". California Secretary of State. Retrieved April 20, 2017.
  2. ^ Michael Swaine (February 15, 1982). "16-bit revolution, part 2: UNIX operating systems". InfoWorld. p. 7. Retrieved May 2, 2018. Within a year, companies like Unisoft of Berkeley took UNIX to the micros. [...] Several companies currently developing 68000-based computers are using Berkeley's UNIX; CM Technologies, Codata and Dual all depend on Berkeley's Unifosft for support.
  3. ^ Libes, Don; Ressler, Sandy; Ressler, Sanford (April 1989). Life with UNIX: a guide for everyone. Prentice Hall. pp. 24–25, 58. ISBN 9780135366578. Retrieved April 22, 2017.
  4. ^ a b "History and Current Activities". UniSoft. Retrieved April 20, 2017.
  5. ^ Birdsall, James W. "The Sun Hardware Reference". SunHELP. Retrieved April 20, 2017. Sun-1's were the very first models ever produced by Sun. The earliest ran Unisoft V7 UNIX; SunOS 1.x was introduced later.
  6. ^ Keefe, Patricia (March 2, 1987). "Apple brackets Unix, Ethernet". Computerworld. IDG Enterprise. p. 94. ISSN 0010-4841. Retrieved April 22, 2017. Unisoft Corp. has incorporated advanced connectivity features into the A/UX operating system, a Unix implementation developed for Apple by Unisoft. {{cite book}}: |journal= ignored (help)
  7. ^ Ryan Thoryk (October 7, 2021). "History of IRIX". Retrieved December 25, 2021.

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