Acomputer system is a nominally completecomputer that includes thehardware,operating system (mainsoftware), and the means to useperipheral equipment needed and used for full or mostly full operation. Such systems may constitutepersonal computers (includingdesktop computers,portable computers,laptops,all-in-ones, and more),mainframe computers,minicomputers,servers, andworkstations, among other classes of computing. The following is a list ofnotable manufacturers and sellers of computer systems, both present and past. There are currently432 companies in this incomplete list.
| Name | Parent company | Country of origin | Year of market entry | Note(s)/ ref(s). |
|---|---|---|---|---|
| Acemagic | — | China | 2013 | |
| Acer Inc. | — | Taiwan | 1976 | |
| ACube Systems Srl | — | Italy | 2007 | |
| Advanced Battlestations | Newegg | United States | 2000 | |
| AG Neovo | — | Taiwan | 1978 | |
| Aigo | — | China | 1993 | |
| Alienware | Dell(since 2006) | United States | 1996 | |
| AOpen | Acer Inc. | Taiwan | 1996 | |
| Aorus | Gigabyte Technology | Taiwan | 2016 | |
| Apple Inc. | — | United States | 1976 | |
| ASRock | Pegatron(since 2010) | Taiwan | 2002 | |
| Asus | — | Taiwan | 1989 | |
| BenQ | Qisda Corporation | Taiwan | 1984 | |
| Biostar | — | Taiwan | 1986 | |
| Brother Industries | — | Japan | ||
| Chassis Plans | — | United States | 1997 | |
| Chip PC Technologies | — | Israel | 2000 | |
| Cisco Systems | — | United States | 1984 | |
| ClearCube | — | United States | 1997 | |
| Clevo | — | Taiwan | 1983 | |
| Clover Network | Fiserv | United States | 2010 | |
| Compal Electronics | — | Taiwan | 1984 | |
| Cray | Hewlett Packard Enterprise(since 2019) | United States | 1972 | |
| CyberPowerPC | — | United States | 1998 | |
| Dell | — | United States | 1984 | |
| DFI | — | Taiwan | 1981 | |
| Digital Storm | — | United States | 2002 | |
| Dynabook Inc. | Sharp Corporation(since 2020) | Japan | 1954 | |
| Elitegroup Computer Systems | — | Taiwan | 1987 | |
| Epson | — | Japan | 1982 | [a] |
| Eurocom Corporation | — | Canada | 1989 | |
| EVGA Corporation | — | United States | 1999 | |
| Falcon Northwest | — | United States | 1992 | |
| First International Computer | — | Taiwan | 1979 | |
| Founder Technology | — | China | 1986 | |
| Foxconn | — | Taiwan | 1974 | |
| Framework Computer | — | United States | 2021 | |
| Fujitsu | — | Japan | 1954 | |
| Fujitsu Technology Solutions | Fujitsu | Japan | 1999 | |
| Gigabyte Technology | — | Taiwan | 1986 | |
| Alphabet Inc.(since 2016) | United States | 2011 | [1] | |
| Gradiente | IGB Eletrônica | Brazil | 1964 | |
| Groupe Bull | Atos | France | 1952 | |
| Grundig | Arçelik | Germany | ||
| Hasee | — | China | 1995 | |
| HCLTech | — | India | 1975 | |
| Hewlett Packard Enterprise | — | United States | 2015 | |
| Hisense | — | China | 1994 | |
| Hitachi | — | Japan | 1958 | [b] |
| HP Inc. | — | United States | 2015 | |
| Huawei | — | China | 1987 | |
| Hyundai Technology | Hyundai Group | South Korea | 1986 | |
| IBM | — | United States | 1952 | |
| IGEL Technology | — | Germany | 2001 | |
| Intel | — | United States | 1968 | |
| Inventec | — | Taiwan | 1975 | |
| Itautec | Itaúsa | Brazil | 1979 | |
| Kontron | — | Germany | 1959 | |
| Lanix | — | Mexico | 1990 | |
| Lanner Electronics | — | Taiwan | 1986 | |
| Lenovo | — | China | 1984 | |
| LG Corporation | — | South Korea | 1983 | |
| Lite-On | — | Taiwan | 1975 | |
| Maingear | — | United States | 2002 | |
| MCST | — | Russia | 1992 | |
| Medion | Lenovo(since 2011) | Germany | 1983 | |
| Mesh Computers | — | United Kingdom | 1987 | |
| Micro Center | Micro Electronics, Inc. | United States | 1979 | |
| Microsoft | — | United States | 2012 | |
| Micro-Star International | — | Taiwan | 1986 | |
| MiTAC | — | Taiwan | 1982 | |
| Motorola Mobility | Lenovo(since 2014) | United States | 2011 | |
| Mouse Computer | — | Japan | 1998 | |
| NComputing | — | United States | 2003 | |
| NCR Corporation | — | United States | 1953 | |
| NEC | — | Japan | 1954 | |
| Nvidia | — | United States | 1993 | |
| NZXT | — | United States | 2004 | |
| Olidata | Acer Inc.(since 2009) | Italy | 1982 | |
| Oracle Corporation | — | United States | 1977 | |
| Origin PC | Corsair Gaming(since 2019) | United States | 2009 | |
| Panasonic | — | Japan | 1958 | |
| Pine64 | — | Hong Kong | 2015 | |
| Positivo Tecnologia | Grupo Positivo | Brazil | 1989 | |
| Puget Systems | — | United States | 2000 | |
| Quanta Computer | — | Taiwan | 1988 | |
| Raspberry Pi Holdings | — | United Kingdom | 2012 | |
| Razer Inc. | — | Singapore | 1998 | |
| RCA | American Future Technology Corporation | United States | ||
| Research Machines | — | United Kingdom | 1977 | |
| Samsung Electronics | — | South Korea | 1982 | |
| Sapphire Technology | — | Hong Kong | 2001 | |
| Shuttle Inc. | — | Taiwan | 1983 | |
| Síragon | — | Venezuela | 2004 | |
| Sony | — | Japan | 1982 | |
| Sord Computer Corporation | — | Japan | 1970 | |
| Stratus Technologies | — | United States | 1980 | |
| Supermicro | — | United States | 1993 | |
| System76 | — | United States | 2005 | |
| TabletKiosk | — | United States | 2003 | |
| Tatung Company | — | Taiwan | 1984 | |
| Tuxedo Computers | — | Germany | 2004 | |
| Tyan | MiTAC(since 2007) | Taiwan | 1989 | |
| Unisys | — | United States | 1986 | |
| Vaio | — | Japan | 1996 | [c] |
| Valve Corporation | — | United States | 2015 | |
| Velocity Micro | — | United States | 1997 | |
| VIA Technologies | — | Taiwan | 1987 | |
| Viglen | — | United Kingdom | 1975 | |
| Vizio | — | United States | 2002 | |
| Walton Group | — | Bangladesh | 1977 | |
| Wistron | — | Taiwan | 2001 | |
| Wortmann | — | Germany | 1986 | |
| Xiaomi | — | China | 2010 | |
| Zoostorm | VIP Group | United States | 1993 | |
| ZOTAC | — | Hong Kong | 2006 | |
| zSpace | — | United States | 2007 |
 |
| Name | Parent company | Country of origin | Year of market entry | Year of market exit | Fate | Note(s)/ ref(s). |
|---|---|---|---|---|---|---|
| 3R Computers | Orange Nassau Electronics(1985–1992) | United States | 1981 | 1992 | Acquired byDigital Communications Associates | |
| Acorn Computers | — | United Kingdom | 1978 | 1998 | Acquired byMorgan Stanley and reorganized asElement 14 | |
| Action Computer Enterprise | — | United States | 1978 | 1990 | Dissolution | |
| Adage, Inc. | — | United States | 1957 | 1994 | Acquired by Systems & Computer Technology Corporation | |
| Advanced Digital Corporation | — | United States | 1980 | 1990 | Bankruptcy | |
| Advanced Logic Research | — | United States | 1984 | 1997 | Acquired byGateway, Inc. | |
| ACFA, Inc. | — | United States | 1977 | 1980 | Dissolution | |
| Airis Computer | — | United States | 1989 | 1993 | Dissolution | |
| Alaris, Inc. | — | United States | 1991 | 1996 | Left the computer business | |
| Alliant Computer Systems | — | United States | 1982 | 1992 | Bankruptcy | |
| Alpha Microsystems | — | United States | 1977 | 2018 | Dissolution | |
| Altos Computer Systems | — | United States | 1977 | 1990 | Acquired byAcer Inc. | |
| AM Jacquard Systems | — | United States | Unknown | Unknown | Unknown | |
| Ambra Computer Corporation | IBM | United States | 1992 | 1996 | Dissolution | |
| Amdahl Corporation | — | United States | 1970 | 1997 | Acquired byFujitsu | |
| Amdek | Wyse | United States | 1987 | 1988 | Left the computer business; continued to make monitors until the late 1990s | [3][4][5] |
| Ampro | — | United States | 1983 | 2008 | Acquired byADLINK | |
| American Computer and Peripheral | — | United States | 1985 | 1990 | Bankruptcy | |
| American Micro Technology | — | United States | 1985 | 1988 | Dissolution | |
| Ampere, Inc. | — | Japan | 1984 | Unknown | Unknown | |
| Amstrad | — | United Kingdom | 1984 | 2007 | Acquired byBSkyB | |
| AnyBus Technologies | CMS Enhancements | United States | 1992 | 1994 | Dissolution | |
| Apollo Computer | — | United States | 1980 | 1989 | Acquired byHewlett-Packard | |
| Apparat, Inc. | — | United States | 1978 | 1988 | Dissolution | |
| Apricot Computers | — | United Kingdom | 1965 | 1999 | Dissolution | |
| Ardent Computer | — | United States | 1985 | 1989 | Merged withStellar Computer to formStardent Inc. | |
| AST Research | Samsung Electronics(1997–1999) | United States | 1980 | 1999 | Acquired bySamsung Electronics in 1997; division dissolved in 1999 | |
| Atari Corporation | JT Storage(1996–1998) | United States | 1984 | 1996 | Acquired byJT Storage; JT in turn sold toHasbro in 1998 | |
| Athena Computer & Electronic Systems | — | United States | 1982 | 1987 | Dissolution | |
| The Authorship Resource | — | United States | 1977 | Unknown | Dissolution | |
| AT&T Computer Systems | AT&T Corporation | United States | 1984 | 1989 | Merged back intoAT&T Corporation; previously reorganized asAT&T Information Systems | |
| Averatec | TriGem | United States | 2003 | 2012 | Dissolution | |
| Barrington International | — | United States | 1980 | 1986 | Dissolution | |
| Be Inc. | — | United States | 1990 | 2001 | Acquired byPalm, Inc. | |
| Bell & Howell | — | United States | 1979 | 1982 | Exited the computer business | |
| Bendix Corporation | — | United States | 1956 | 1963 | Sold computer division toControl Data Corporation | [6] |
| BiiN | — | United States | 1982 | 1990 | Liquidation | |
| Billings Computer | — | United States | 1977 | Unknown | Unknown | |
| Blue Chip Electronics | — | United States | 1981 | 1989 | Acquired by Capewood Limited | |
| Burroughs Corporation | — | United States | 1953 | 1986 | Merged withSperry Corporation to formUnisys | |
| CADO Systems | — | United States | 1976 | 1983 | Acquired by Contel Business Systems | |
| Callan Data Systems | — | United States | 1980 | 1985 | Bankruptcy | |
| Calma | General Electric(1980–1988) | United States | 1965 | 1988 | Broken up | |
| Canon Computer Systems | Canon Inc. | United States | 1992 | 1997 | Exited the computer business; dissolved in 2001 | |
| Canon Inc. | — | Japan | 1978 | 1992 | Spun off computer division asCanon Computer Systems | |
| Celerity Computing | — | United States | 1983 | 1988 | Acquired byFloating Point Systems | |
| Centurion Computer Corporation | — | United States | 1974 | 1985 | Exited the computer business | |
| Chicony Electronics | — | Taiwan | 1988 | 2000 | Left the computer business; still active in peripheral business | |
| Cobalt Networks | — | United States | 1996 | 2000 | Acquired bySun Microsystems | |
| Commodore International | — | United States | 1976 | 1994 | Bankruptcy | |
| Compagnie Internationale pour l'Informatique | — | France | 1966 | 1976 | Merged intoGroupe Bull | |
| Comp-Sultants | — | United States | 1969 | 1977 | Dissolution | |
| Compaq | — | United States | 1982 | 2002 | Acquired byHewlett-Packard; defunct as a subsidiary since 2013 | |
| CompuAdd | — | United States | 1982 | 1994 | Bankruptcy | |
| CompuPro | — | United States | 1980 | 1985 | Restructured asViasyn | |
| CompuSource | — | United States | 1982 | Unknown | Unknown | |
| Computervision | — | United States | 1969 | 1998 | Merged intoPrime Computer | |
| Computer Automation | — | United States | 1968 | 1992 | Ceased operations in 1992 | |
| Computer Control Company | — | United States | 1953 | 1966 | Acquired byHoneywell | |
| Computer Devices, Inc. | — | United States | 1969 | 1998 | Dissolution | |
| Computer Research Corporation | — | United States | 1950 | 1953 | Acquired byNCR Corporation | |
| Computer Transceiver Systems, Inc. | — | United States | 1968 | 1998 | Acquired by Vertex Industries in 1987 following bankruptcy; spun off and acquired by Mortgage Plus Equity and Loan Corporation in 1998 | |
| Concurrent Computer Corporation | — | United States | 1985 | 2017 | Broken up | |
| Control Data Corporation | — | United States | 1957 | 1992 | Broken up from 1988 to 1992; remainder is nowCeridian | |
| Convergent Technologies | — | United States | 1979 | 1988 | Acquired byUnisys | |
| Convex Computer | — | United States | 1982 | 1995 | Purchased byHewlett-Packard | |
| Corona Data Systems | Daewoo(1987–1993) | United States | 1982 | 1993 | Acquired by Daewoo in 1987; brand phased out in 1993 | |
| Corvus Systems | — | United States | 1979 | 1987 | Bankruptcy | |
| CPT Corporation | — | United States | 1971 | Unknown | Dissolution | |
| Cray Computer Corporation | — | United States | 1989 | 1995 | Bankruptcy | |
| Cromemco | — | United States | 1974 | 1987 | Acquired byDynatech | |
| Cydrome | — | United States | 1984 | 1988 | Dissolution | |
| Cumulus Computer Corporation | — | United States | 1990 | 1992 | Bankruptcy | |
| Daisy Systems | — | United States | 1981 | 1990 | Acquired byIntergraph | |
| Data General | — | United States | 1968 | 1999 | Acquired byEMC in 1999 | |
| Dataindustrier AB | — | Sweden | 1970 | 1990 | Acquired byGroupe Bull | |
| Datapoint | — | United States | 1968 | 2000 | Bankruptcy | |
| Dauphin Technology | — | United States | 1988 | 2006 | Reverse merged with GeoVax | |
| Datavue | Intelligent Systems | United States | 1983 | Unknown | Unknown | |
| Dayna Communications | — | United States | 1984 | 1997 | Acquired byIntel | |
| Decision Data | — | United States | 1969 | 1988 | Acquired by Onset Corporation | |
| Deltagold | Delta Computer | United States | 1986 | 1990 | Bankruptcy | |
| DeskStation Technology | — | United States | 1989 | 2000 | Acquired bySamsung Electronics in 1998; division dissolved in 2000 | [7] |
| Digital Equipment Corporation | — | United States | 1957 | 1998 | Acquired byCompaq | |
| The Digital Group | — | United States | 1975 | 1979 | Bankruptcy | |
| DTK Computer | Datatech Enterprises | Taiwan | 1981 | 2009 | Dissolution; Dubai subsidiary is active as of November 2022[update] | |
| Durango Systems Corporation | — | United States | 1977 | 1984 | Merged with Molecular Systems in 1982; Molecular went bankrupt in 1984 | |
| Dynalogic | — | Canada | 1982 | 1983 | Acquired by Bytec | |
| Eagle Computer | — | United States | 1978 | 1986 | Dissolution | |
| ECD Corporation | — | United States | 1974 | 1983 | Dissolution | |
| Eckert–Mauchly Computer Corporation | — | United States | 1946 | 1950 | Acquired byRemington Rand | |
| EduQuest | IBM | United States | 1992 | 1995 | Discontinued computer lineup after reorganizing as IBM K–12 Education | |
| Eldorado Electrodata | — | United States | 1968 | 1976 | Dissolution | |
| ElectroData Corporation | — | United States | 1954 | 1956 | Acquired byBurroughs Corporation | |
| Electronic Associates | — | United States | 1945 | Unknown | Unknown | |
| Elektronorgtechnica | — | Soviet Union | 1971 | 2005 | Acquired byThe Tetris Company in 2005 | |
| Elonex | — | United Kingdom | 1986 | Unknown | Exited the computer business; currently sells tablets | |
| Elxsi | — | United States | 1979 | 1989 | Acquired byTata Group | |
| eMachines | Gateway, Inc.(2004–2007) Acer Inc.(2007–2013) | United States | 1998 | 2013 | Acquired byGateway, Inc., in 2004, in turn acquired byAcer Inc.; brand discontinued by Acer in 2013 | |
| Encore Computer | — | United States | 1983 | 1998 | Acquired by Gores Technology Group and renamed to Encore Real Time Computing | |
| Engineering Research Associates | — | United States | 1946 | 1952 | Acquired byRemington Rand | |
| English Electric LEO Company | English Electric | United Kingdom | 1963 | 1967 | Acquired byInternational Computers Limited | |
| Escom AG | — | Germany | 1986 | 1996 | Bankruptcy | |
| ETA Systems | Control Data Corporation | United States | 1983 | 1989 | Dissolution | |
| Evans & Sutherland | — | United States | 1986 | 1989 | Exited the computer business | |
| Everex | Formosa Plastics Group(1993–2009) | United States(1983–1993) Taiwan(1993–2009) | 1983 | 2009 | Dissolution | |
| Evesham Technology | — | United Kingdom | 1983 | 2008 | Liquidation; assets purchased byTime Group | |
| Exxon Office Systems | Exxon Enterprises | United States | 1981 | 1985 | Acquired byHarris Corporation | |
| First Class Systems | — | United States | 1989 | 1990 | Dissolved | |
| Floating Point Systems | — | United States | 1970 | 1991 | Acquired byCray | |
| Foonly | — | United States | 1976 | 1989 | Dissolution | |
| Fortune Systems | — | United States | 1980 | 1987 | Exited the computer business | |
| Franklin Computer Corporation | — | United States | 1981 | 1986 | Exited the computer business; reorganized intoFranklin Electronic Publishers | |
| Friden, Inc. | — | United States | 1957 | 1965 | Acquired bySinger Corporation | |
| Gateway, Inc. | — | United States | 1985 | 2007 | Acquired by Acer; brand revived in the United States in 2020 | |
| General Automation | — | United States | 1968 | Unknown | Unknown | |
| General Computer Corporation | — | United States | 1981 | 2015 | Dissolution | |
| General Electric | — | United States | 1954 | 1970 | Sold computer division toHoneywell | |
| Genisco Technology | — | United States | 1983 | 1997 | Bankruptcy | |
| Gericom | — | Austria | 1990 | 2008 | Acquired by Quanmax AG and merged withSystemhaus mit Eigentechnologie (S&T) | |
| Gimix | — | United States | 1975 | Unknown | Unknown | |
| Gnat Computers | — | United States | 1976 | 1983 | Acquired by Data Technology Industries | |
| GO Corporation | — | United States | 1987 | 1994 | Dissolution | |
| Gould Electronics | — | Germany | 1981 | 1988 | Sold computer division to Nippon Mining; division in turn sold toEncore Computer in 1988 | |
| Grid Systems | Tandy Corporation(1988–1993) | United States | 1979 | 1993 | Acquired byTandy Corporation; brand sold to UK investors in 1993, which still exists asGrid Defence Systems | |
| HAL Computer Systems | Fujitsu(1993–2001) | United States | 1990 | 2001 | Dissolution | |
| Handspring, Inc. | — | United States | 1998 | 2003 | Acquired byPalm, Inc. | |
| Harris Corporation | — | United States | 1967 | 1994 | Spun off computer division asHarris Computer Systems in 1994, itself acquired byConcurrent Computer Corporation in 1996 | |
| Hazeltine Corporation | — | United States | 1970 | 1986 | Acquired byEmerson Electric | |
| Hewlett-Packard | — | United States | 1966 | 2015 | Broken up intoHewlett Packard Enterprise andHP Inc. | |
| Honeywell | — | United States | 1957 | 1991 | Sold computer division toGroupe Bull | |
| HTC | — | Taiwan | 1997 | 2017 | Sold computer division toAlphabet Inc. | |
| IMLAC | — | United States | 1968 | 1979 | Acquired byHazeltine Corporation | |
| IMS Associates, Inc. | — | United States | 1973 | 1979 | Bankruptcy | |
| Inacom | — | United States | 1991 | 2000 | Bankruptcy | |
| Informer Computer Terminals | — | United States | 1971 | 2007 | Dissolution | |
| Ithaca InterSystems | — | United States | 1976 | 1986 | Dissolution | |
| Intelligence Technology Corporation | — | United States | 1986 | 2000 | Dissolution | |
| International Computers and Tabulators | — | United Kingdom | 1959 | 1968 | Acquired byInternational Computers Limited | |
| International Computers Limited | — | United Kingdom | 1968 | 2002 | Acquired byFujitsu | |
| Intertec Data Systems | — | United States | 1973 | 1991 | Bankruptcy | [d] |
| Iskra Delta | — | Slovenia | 1974 | 2021 | Bankruptcy | |
| Jetta International | — | United States | 1991 | Unknown | Dissolution | |
| Jonos | Phoenix Group(1989–1992) | United States | 1982 | 1992 | Bankruptcy | |
| Jupiter Cantab | — | United Kingdom | 1982 | 1983 | Bankruptcy | |
| Kaypro | Non-Linear Systems | United States | 1981 | 1992 | Bankruptcy | |
| Kenbak Corporation | — | United States | 1970 | 1973 | Acquired by CTI Education Products | |
| Kendall Square Research | — | United States | 1986 | 1994 | Bankruptcy | |
| Kohjinsha | — | Japan | 2004 | Unknown | Dissolution | |
| Korea Data Systems | — | South Korea | 1998 | 2003 | Left the computer business | |
| LanSlide Gaming PCs | — | United States | 2005 | 2011 | Dissolution | |
| Lap Power | — | Sweden | 1991 | 2000 | Bankruptcy | |
| Leading Edge Products | Daewoo(1989–1995) Manuhold Investment AG(1995–1997) | United States | 1980 | 1997 | Acquired byDaewoo; division in turn sold to Manuhold Investment AG; brand phased out in 1997 | |
| Leading Technology | — | United States | 1985 | 1992 | Acquired byVTech | |
| Léanord | — | France | 1960 | 1989 | Merged with Intertechnique | |
| Librascope | Singer Corporation(until 1992) | United States | 1956 | 1992 | Acquired byLoral Space & Communications | |
| Librex Computer Systems | Nippon Steel Corporation | United States | 1990 | 1993 | Dissolution | |
| Linus Technologies | — | United States | 1985 | 1990 | Dissolution | |
| Lisp Machines | — | United States | 1979 | 1987 | Bankruptcy | |
| LogAbax | — | France | 1947 | 1988 | Bought by Olivetti | |
| Logical Machine Corporation | — | United States | 1974 | Unknown | Dissolution | [e] |
| Luxor AB | — | Sweden | 1978 | 1986 | Sold computer division toNokia in 1985; brand phased out in 1986 | |
| Mad Computers | — | United States | 1982 | Unknown | Unknown | |
| Magnavox | Philips | United States | 1972 | 1991 | Magnavox-branded computers discontinued in 1992 | |
| Magnuson Computer Systems | — | United States | 1977 | 1983 | Bankruptcy | |
| Martin Research | — | United States | 1974 | 1986 | Acquired byZebra Technologies | [f] |
| MASSCOMP | — | United States | 1981 | 1988 | Acquired byConcurrent Computer Corporation | |
| MasPar | — | United States | 1987 | 1999 | Acquired by Accrue Software | |
| Maxdata | — | Germany | 1987 | 2008 | Dissolution; warranty claims taken over by Swiss Belinea AG, itself acquired by Bluechip Computer | |
| Meebox | — | Mexico | 2009 | Unknown | Dissolution | |
| Metaphor Computer Systems | — | United States | 1982 | 1994 | Acquired byIBM | |
| Micro Craft | — | United States | 1981 | 1987 | Dissolution; restructured as Dimension Electronics in 1987 | |
| Micro Instrumentation and Telemetry Systems | — | United States | 1969 | 1977 | Acquired byPertec Computer | |
| Microdata Corporation | — | United States | 1969 | 1983 | Acquired byMcDonnell Douglas | |
| Micron Technology | — | United States | 1991 | 2001 | Spun off computer division asMPC Corporation | |
| Micromation | — | United States | 1978 | 1983 | Unknown | |
| Micronics Computers | — | United States | 1986 | 1998 | Acquired byDiamond Multimedia | |
| MicroOffice | — | United States | 1981 | 1985 | Acquired byTelxon Corporation in 1985 | |
| Micros Systems | — | United States | 1978 | 2014 | Acquired byOracle Corporation | |
| Midwest Scientific Instruments | — | United States | 1972 | 1985 | Dissolution | |
| Mitsubishi Electric | Mitsubishi Group | Japan | 1960 | 1990 | Exited the computer business | |
| Modcomp | — | United States | 1970 | Unknown | Exited the computer business; survives today as CSPi Technology Solutions, a systems integrator | |
| Mohawk Data Sciences Corporation | — | United States | 1964 | 1988 | Acquired byDecision Data; previously restructured as Qantel Corporation | |
| Monorail Inc. | — | United States | 1995 | 2005 | Dissolution | |
| Motion Computing | — | United States | 2001 | 2015 | Acquired byXplore Technologies | |
| MPC Corporation | — | United States | 2001 | 2008 | Bankruptcy | |
| Motorola | — | United States | 1974 | 2011 | Dissolution | |
| Multiflow | — | United States | 1984 | 1990 | Dissolution | |
| Mycron | — | Norway | 1975 | 1999 | Exited the computer industry | |
| NBI Incorporated | — | United States | Unknown | 1991 | Bankruptcy | |
| nCUBE | — | United States | 1983 | 2005 | Acquired byC-COR | |
| Neoware | — | United States | 1992 | 2007 | Acquired byHewlett-Packard | |
| Network Computing Devices | — | United States | 1987 | 2004 | Dissolution | |
| NeXT | — | United States | 1985 | 1997 | Acquired byApple Computer | |
| Nixdorf Computer | — | West Germany | 1952 | 1990 | Acquired bySiemens; renamedSiemens Nixdorf Informationssysteme AG | |
| Norsk Data | — | Norway | 1967 | 1992 | Acquired by Telenor | |
| Northgate Computer Systems | — | United States | 1987 | 1997 | Acquired by Lan Plus, after filing forChapter 11 bankruptcy in 1994 | |
| Northwest Microcomputer Systems | — | United States | 1977 | 1982 | Dissolution | |
| North Star Computers | — | United States | 1976 | 1989 | Dissolution | |
| Noval, Inc. | Gremlin Industries(1977–1978) Sega(1978–1979) | United States | 1977 | 1979 | Dissolution | |
| Ohio Scientific | — | United States | 1975 | 1980 | Acquired byM/A-COM | |
| Olivetti | — | Italy | 1955 | 1997 | Exited the computer business | |
| Omnidata | — | United States | 1978 | 1988 | Dissolution | |
| Onyx Systems | — | United States | 1979 | 1985 | Acquired byCorvus Systems | |
| Osborne Computer Corporation | — | United States | 1980 | 1985 | Dissolution; assets and name sold to Mikrolog Ltd, of Finland | |
| Otrona | — | United States | 1981 | 1984 | Bankruptcy | |
| Outbound Systems | — | United States | 1989 | 1993 | Bankruptcy | |
| Pacific Cyber/Metrix | — | United States | 1975 | 2001 | Dissolution | |
| Packard Bell | — | United States | 1986 | 2008 | Majority stake purchased byNEC in 1995; stake relinquished in 2006; eventually acquired byAcer Inc. in 2008 | |
| Packard Bell Computer Corporation | Packard Bell Corporation | United States | 1957 | 1964 | Acquired byRaytheon Company | |
| Panda Project | — | United States | 1992 | 1998 | Exited the computer business | |
| Pandigital, Inc. | — | United States | 1998 | 2012 | Bankruptcy | |
| Parallan Computer | — | United States | 1986 | 1994 | Exited the computer business | |
| Parasitic Engineering | — | United States | 1976 | 1983 | Dissolution | |
| Pencept | — | United States | 1980 | Unknown | Unknown | |
| Pertec Computer | — | United States | 1967 | 1987 | Acquired byTriumph-Adler | |
| Philco | — | United States | 1954 | 1961 | Exited the computer business before being acquired byFord Motor Company | |
| Philips | — | Netherlands | 1953 | 1991 | Sold computer division toDigital Equipment Corporation | [8] |
| PolyMorphic Systems | — | United States | 1976 | Unknown | Unknown | |
| Poqet Computer Corporation | — | United States | 1989 | 1992 | Acquired byFujitsu | [9] |
| Power Computing Corporation | — | United States | 1993 | 1998 | Acquired byApple Computer | |
| Prime Computer | — | United States | 1972 | 1998 | Acquired byParametric Technology Corporation | |
| Processor Technology | — | United States | 1975 | 1979 | Dissolution | |
| Pronto Computers | — | United States | 1983 | 1987 | Bankruptcy | |
| Psystar Corporation | — | United States | 2008 | 2009 | Exited the computer business following permanent injunction to stop selling computers withApple'sMac OS X | |
| Pyramid Technology | — | United States | 1981 | 1995 | Acquired bySiemens | |
| Q1 Corporation | — | United States | 1971 | 1974 | Acquired byNixdorf Computer | |
| Quantex Microsystems | — | United States | 1984 | 2000 | Bankruptcy | |
| Quasar Data Products | — | United States | 1978 | 1986 | Dissolution | |
| Réalisation d'Études Électroniques | — | France | 1970 | 1980 | Taken over byGroupe Bull | |
| Radio Shack | Tandy Corporation | United States | 1977 | 1983 | Branding subsumed by the Tandy name in 1983 | [10] |
| Raytheon Company | — | United States | 1949 | 1984 | Spun off as Raytheon Data Systems in 1971, itself acquired by Telex Corporation in 1984 | [11][12] |
| RCA | — | United States | 1956 | 1971 | Exited the computer business in 1971; division sold toSperry Rand in 1972 | |
| Reeves Instrument Corporation | — | United States | 1944 | 1995 | Unknown | |
| Remington Rand | — | United States | 1950 | 1955 | Acquired bySperry Corporation to form Sperry Rand | |
| Regnecentralen | — | Denmark | 1955 | 1989 | Acquired byInternational Computers Limited | |
| Reply Corporation | — | United States | 1988 | 1997 | Acquired byRadius Inc. | |
| Ridge Computers | — | United States | 1982 | 1990 | Dissolution | |
| RGS Electronics | — | United States | 1974 | Unknown | Dissolution | |
| ROLM | IBM(1984–1998) | United States | 1969 | 1998 | Acquired bySiemens | |
| Seattle Computer Products | — | United States | 1978 | Unknown | Dissolution | |
| Sanyo | — | Japan | 1982 | 2009 | Acquired byPanasonic | |
| Scientific Data Systems | — | United States | 1961 | 1969 | Acquired byXerox | |
| Sequent Computer Systems | — | United States | 1983 | 1999 | Acquired byIBM | |
| Siemens | — | Germany | 1955 | 2009 | Siemens Nixdorf Informationssysteme AG merged withFujitsu intoFujitsu Siemens Computers in 1999; remaining stake sold to Fujitsu in 2009 | [13] |
| Silicon Graphics International | — | United States | 1982 | 2016 | Formerly Rackable Systems, Inc., it acquiredSilicon Graphics, Inc. in 2009; acquired byHewlett Packard Enterprise in 2016 | |
| Silicon Graphics, Inc. | — | United States | 1981 | 2009 | Acquired by Rackable Systems, Inc., to become Silicon Graphics International | |
| SIMIV | — | France | 1982 | 1989 | Exited the computer business | |
| Sinclair Research | — | United Kingdom | 1978 | 1986 | Acquired byAmstrad | |
| Sirius Systems Technology | — | United States | 1980 | 1984 | Acquired by Datatronic AB | |
| Smoke Signal Broadcasting | — | United States | 1977 | 1991 | Dissolution | |
| SMT Goupil | — | France | 1979 | 1991 | Bankruptcy | |
| Société d'Electronique et d'Automatisme | — | France | 1947 | 1966 | Merged withinCII | |
| Société européenne de mini-informatique et systèmes | — | France | 1976 | 1982 | Merged intoGroupe Bull | |
| Solbourne Computer | — | United States | 1986 | 2008 | Acquired byDeloitte Consulting | |
| Soyo Group | — | United States | 1985 | 2009 | Bankruptcy | |
| Spectravideo | — | United States | 1981 | 1988 | Acquired by SpectraVideo plc, unrelated holding company from the United Kingdom | |
| Sperry Corporation | — | United States | 1953 | 1986 | Merged withBurroughs to formUnisys; company was formerly Sperry Rand until it droppedRand from its name in 1978 and continued as Sperry | |
| Sperry Rand | — | United States | 1955 | 1978 | Reverted to Sperry Corporation name in 1978 | |
| Stardent Inc. | — | United States | 1989 | 1994 | Restructured as Kubota Graphics in 1994; dissolved the same year | |
| Sun Microsystems | — | United States | 1982 | 2010 | Acquired byOracle Corporation | |
| Southwest Technical Products Corporation | — | United States | 1975 | 1990 | Dissolution | |
| STM Systems | — | United States | 1976 | Unknown | Unknown | |
| Sycor | — | United States | 1967 | Unknown | Unknown | |
| Symbiotic Systems | — | United States | 1977 | 1983 | Dissolution | |
| Symbolics | — | United States | 1980 | 1996 | Bankruptcy | |
| Syntrex | — | United States | 1979 | 1992 | Dissolution | |
| Systemax | — | United States | 1981 | 2021 | Exited the computer business | |
| Systems Engineering Laboratories | — | United States | 1959 | 1981 | Acquired byGould Electronics | |
| Systime Computers | — | United States | 1973 | 1989 | Acquired byControl Data Corporation; broken up in 1989 | |
| T-Platforms | — | Russia | 2002 | 2023 | Bankruptcy | |
| Tadpole Computer | — | United States | 1994 | 2005 | Acquired byGeneral Dynamics | |
| Tandem Computers | — | United States | 1976[14] | 1998 | Acquired byCompaq; thenHewlett Packard Enterprise | |
| Tandon Corporation | — | United States | 1975 | 1993 | Dissolution | |
| Tandy Corporation | — | United States | 1977 | 1993 | Sold computer division toAST Research; former parent company ofRadio Shack | |
| Tangerine Computer Systems | — | United Kingdom | 1979 | 1987 | Bankruptcy | |
| Télémécanique | — | France | 1968 | 1976 | Computer division merged withCII's minicomputer division to becomeSociété européenne de mini-informatique et systèmes (SEMS) | |
| Tava Corporation | — | United States | 1983 | 1984 | Acquired by Replitech | |
| Terak Corporation | — | United States | 1975 | 1985 | Acquired bySanders Associates | |
| TeleVideo | — | United States | 1975 | 2011 | Dissolution | |
| Teleram | — | United States | 1973 | 1985 | Bankruptcy | |
| Texas Instruments | — | United States | 1979 | 1997 | Sold computer division toAcer Inc. | [15] |
| Thinking Machines Corporation | — | United States | 1983 | 1994 | Bankruptcy; hardware and software divisions acquired bySun Microsystems | |
| Three Rivers Computer Corporation | — | United States | 1974 | 1985 | Bankruptcy | |
| Tiki Data | — | Norway | 1983 | 1996 | Acquired by Merkantildata | |
| Timex Sinclair | — | United States | 1982 | 1984 | Dissolution | [g] |
| Tiny Computers | — | United Kingdom | 1996 | 2002 | Acquired byTime Group; brand phased out in 2005 | |
| Toshiba | — | Japan | 1954 | 2016 | Discontinued computer lineup in 2016; computer business restructured asDynabook Inc. in 2018, with majority of its shares sold toSharp Corporation the same year; remaining shares sold to Sharp in 2020 | |
| TriGem | — | South Korea | 1980 | 2010 | Bankruptcy | |
| Trilogy Systems | — | United States | 1980 | 1985 | Acquired byElxsi | |
| TRW Inc. | — | United States | 1959 | 2002 | Acquired byNorthrop Grumman | |
| Tulip Computers | — | Netherlands | 1979 | 2009 | Bankruptcy; previously restructured as Nedfield NV in 2008 | |
| Umtech | — | United States | 1976 | 1979 | Acquired by Cha Group | |
| V3 Gaming PC | — | United States | 2010 | 2016 | Dissolution | |
| Varian Data Machines | — | United States | 1967 | 1977 | Acquired bySperry Rand | |
| VEB Robotron | — | German Democratic Republic | 1969 | 1990 | Liquidated / converted into separate corporations and sold off | |
| Vector Graphic | — | United States | 1976 | 1987 | Dissolution | |
| Vestel | — | United States | 1984 | Unknown | Exited the computer business | |
| Viasyn | — | United States | 1985 | 1991 | Dissolution | |
| Viatron | — | United States | 1967 | 1971 | Bankruptcy | |
| ViewSonic | — | United States | 2001 | 2012 | Left the computer business; still active in monitor business | [16][17] |
| Vigor Gaming | — | United States | 2004 | 2010 | Bankruptcy | |
| VoodooPC | — | United States | 1991 | 2009 | Acquired byHewlett-Packard in 2006; brand retired in 2009 | |
| VTech | — | Hong Kong | 1976 | 1997 | Spun off computer division asPC Partner | |
| Walton Group | — | Bangladesh | 1977 | Unknown | Exited the computer business | |
| Wang Laboratories | — | United States | 1951 | 1999 | Acquired byGetronics | |
| Wicat Systems | — | United States | 1980 | 1992 | Acquired byJostens | |
| Wipro | — | India | 1977 | Unknown | Exited the computer business | |
| Wyse | — | United States | 1981 | 2012 | Acquired byDell | |
| Xerox | — | United States | 1969 | 2014 | Exited the computer business | |
| Xybernaut | — | United States | 1990 | 2005 | Bankruptcy | |
| Zenith Data Systems | Zenith Electronics(1979–1991) Groupe Bull(1991–1996) | United States | 1979 | 1996 | Acquired byGroupe Bull in 1991; sold toNEC in 1996, who merged it intoPackard Bell | [18] |
| Zeos | — | United States | 1987 | 1995 | Acquired byMicron Technology | |
| Zeda Computers | — | United States | 1974 | Unknown | Unknown | |
| Zonbu | — | United States | 2006 | Unknown | Dissolution |