Being an obsessed, compulsive hoarder I decided to try and compile a list of all the emulators and simulators I could find on the internet for ease of access. Be aware, these aren't the only machines that can be emulated. I haven't really included MAME because it would be kinda cheating haha, at the time of writing it has 38049 machines ready for use, working or not. Most, if not all of these machines can be found on MAME and I tried not to include machines which are only supported there, unless they were worth mentioning. https://www.mamedev.org/
1930s/1950s:
1934/- - British Typex
1936 - Turing Machine, alt, visualization
1939 - Turing Bombe, alt
1941 - Zuse Z3
1943 - Colossus
1942/1944 - Lorenz SZ40/42
1944 - Dragon
1945 - ENIAC
1948 - Manchester Baby/SSEM, online version, SimH
1949 - Manchester Mark 1
1950s/1960s:
1950 - Pilot ACE
1951 - UNIVAC I(seemingly paid), Virtual UNIVAC
1951 - IAS machine, IASSim, IAS-Emulator
1951 - APEXC, supported by MAME
1952 - Harwell WITCH, alt
1952 - IBM 701, IBM701Emulator, SimH
1952 - BESM
1953 - JOHNNIAC
1954 - IBM NORC
1954 - IBM 650, official SimH
1954 - IBM 704, official SimH
1954 - IBM 705
1955 - Ferranti Pegasus
1955 - IBM 702
1955 - Zuse Z22
1956 - B205, retro-205, online alt
1956 - SILLIAC
1956 - Royal-Mcbee LGP-30/LGP-21
1957 - ERNIE
1957 - Ferranti Mercury
1957/1962 - IBM 709/7090/7094, SimH-cpanel ,[B7094, s709x, updated s709x
1958 - Stantec ZEBRA
1958 - IBM 7070
1958 - Mailüfterl
1959 - PDP-1, FPG-1 emulator, graphics demonstration emulator
1960 - IBM 1401, 3d simulation, simplified version?
1960 - IBM 7074
1960 - IBM 1620
1960 - PLATO Computer System
1960 - Elliot 803, alt
1961/1970s - ANITA Calculators
1961 - Ferranti Sirius
1961 - LEO III
1961 - IBM 7080
1961 - Zuse Z23
1962 - Ferranti Atlas 1
1962 - PDP-4
1962 - Minsk-2
1964 - PDP-6
1964 - Burroughs B5500
1964 - Наири/Nairi
1965 - ICL/ICL9000
1965 - PDP-7
1965 - Elliott 903
1965 - Olivetti Programma P101, alt
1966 - PDP-9
1966 - PDP-10, other emulators, PDP-10 enthusiast group
1966 - PDP-10 KA / KI / KL
1966 - SDS 940
1966 - CDC 1700
1966 - Xerox Sigma 32bit systems
1966 - Apollo Guidance Computer
1966/- Interdata 16b and 32b systems
1969 - Data General Nova, alt, Novas Are Forever emulator
1969 - GRI-909
1969 - IBM System/3, Symulator3
1969 - Honeywell H316
1970s>
1970s - PONG games and variants
1970 - PDP-11, online PDP-11/70 emu, other emulators
1970 - PDP-15
1970 - Imlac PDS-1
1970 - IBM System/370
1970 - COMKIT 8060 / 8061 / 8062
1971 - Hewlett-Packard HP 2100, HP 2116 emulator, other emulators
1971 - Phillips P855/860
1971 - Discrete Circuitry-Based Arcade Games
1971? - FRED 1
1972 - GRI-99
1972 - Magnavox Odyssey
1972 - HP-9800 Series
1972 - HP-35 Calculator, Nonpareil
1972 - Hewlett-Packard HP 3000
1973 - HP-45 Calculator, Nonpareil
1973 - HP-80 Calculator
1973/1977 - Rockwell Calculators
1973 - Wang 2200, github alt
1973 - Xerox Alto, SALTO
1974 - SCELBI
1974 - MCM 70
1974 - Data General Eclipse, mvemg emu
1974 - MU5
1974 - FRED 1.5
1975 - HP-25 Calculator, Nonpareil
1975 - HP-25C Calculator
1975 - HP-55 Calculator
1975 - HP-21 Calculator
1975 - MOS Technology 6502, other emulators
1975 - MITS Altair 8800, faithful online simulator, Altair-rfp, z80pack, EmuGenWiki page
1975 - IMSAI 8080
1975 - RCA Coin Arcade
1975 - SWTPc 6800, SimH, EXORsim
1976 - Cromemco Z-1
1976? - CDP18S020 Evaluation Kit
1976 = Apple I
1976 - MOS Technology KIM-1, Soft6502
1976 - Polymorphic Poly 88
1976 - Processor Technology SOL-20
1976 - Rockwell AIM 65
1976 - RCA Microtutor/Microtutor II
1976 - Terak 8510/a
1976 - Fairchild Channel F
1976 - COSMAC ELF, emma-02
1976 - COSMAC ELF 2000
1976 - Phillips P856
1976/1977 - AY-3-8550/8600-based Pong systems (Coleco Telstar Galaxy, Sheen TVG-201, etc.)
197? - Phillips P85x
1977 - Infinite UC1800
1977 - VAX-11/780
1977 - COSMAC VIP/VIP II
1977? - CHIP-8
1977 - Atari 2600
1977 - V-ELF
1977 - Telmac 1800
1977 - Commodore PET, 2001 series emulator
1977 - RCA Studio II/III, Elf Emulator, emma-02
unreleased - RCA Studio IV
1977 - Compucolor II
1977 - Sharp eSM-B-80TE
1977 - TRS-80 Model I/II/III/4, Matthew Reed's emulators
1977 - MK-14
1977 - NEC TK-80BS
1977 - Dolphin trainer
1977 - Central Data 2650
1977 - Konami Arcade
1977 - Apple II, reddit summary
1978 - Visicom COM-100
1978 - Toshiba EX-80
1978 - Netronics Elf II, emma-02
1978 - Quest Super Elf, emma-02
1978 - Victory MPT-02
1978 - APF MP1000
1978 - Intel 8086
1978 - Ohio Scientific Challenger 1P
1978 - Signetics Instructor 50
1978 - Sharp MZ-80K/C
1978 - Magnavox Odyssey 2/Philips Videopac G7000
1978 - MIKIT 2650
1978 - HP 3000 Series III
1978 - HP-32E
1978 - HP-37E
1978 - HP-38E
1979 - HP-38C
1979 - HP-33C
1979 - HP-34C
1979 - Atari 400/800/XL/XE
1979 - Milton Bradley MicroVision
1979 - NEC PC-8001/mkII/mkIISR
1979 - APF Imagination Machine
1979 - Mattel Intellivision
1979 - Elektor TV Games Computer
1979 - Astro Wars and Galaxia coin-ops by Zaccaria
1979 - Galaxian-based hardware
1979 - Intel 8088
1979? - Cosmicos
1980s
1980 - HP-41CV
1980 - Epson HX-20/HC-20
1980 - Apple ///
1980 - Thomson T9000
1980 - Oscom Nano
1980 - System Formulate BUBCOM80
1980 - Pacman based hardware
1980 - Nintendo Game & Watch
1980 - Sinclair ZX80, sz81, more emulators
1980 - PHUNSY Computer
1980 - NEC TK-85
1980 - VAX-11/750
198x - Elektronika BK-0011M, alt
1980? - Telmac 2000
1980? - Cidelsa
1981 - BBC Micro
1981 - Кроха/Krokha
1981 - Schachcomputer SC 2
1981 - Canon BX-1
1981 - DOS
1981 - Sinclair ZX81
1981 - Toshiba PASOPIA
1981 - Fujitsu FM-8
1981 - National/Panasonic JR-100
1981 - Japan Electronics College MYCOMZ-80a
1981 - Laser Battle and Lazarian coin-ops by Zaccaria
1981 - PDQ-3
1981 - IBM PC, online emulator
1981 - Commodore VIC-20, other emulators
1981 - Acorn Atom, online version
1981 - NEC N5200
1981 - NEC PC-6000
1981 - NEC PC-8801
1981 - VTech Creativision, creatiVision emulator
1981 - Sharp MZ-80b
1981? - Malzak 1 and 2 coin-ops by Kitronix
1981? - ETI 660
1982 - Olivetti M20, supported by MAME
1982 - Telmac TMC-600
1982 - Sharp MZ-700, MZ-800 emulator, EmuZ-700
1982 - Sharp MZ-2000
1982 - Sharp MZ-80a/Sharp MZ-1200
1982 - Sharp MZ-3500
1982 - Intel 80862/Intel 862
1982 - NEC PC-9800
1982 - NEC PC-9801E/U/VF/VM/VX/RA
1982 - Sony SMC-70
1982 - Tomy Tutor/Pyuta
1982 - Sord M5
1982 - Atari 5200
1982 - Commodore 64/65
1982 - Sharp X1/X1twin/X1turbo/X1turboZ
1982 - VAX-11/730
1982 - CPD MPC 1600
1982 - Commodore CBM-II
1982 - Microbee
1982 - EACA EG2000 Colour Genie
1982 - Beta SAGE-II
1982 - MCDS, Microboard Computer Development System
1982 - TRS-80 Model 16
1982 - Entex Adventure Vision
1982 - Casio FP-200
1982 - Yamaha YIS
1982 - Oric-1
1982 - Dragon 32/64, other emulators
1982 - Camputers Lynx
1982 - Vectrex
1982 - Fujitsu FM-7
1982 - Hitachi MB-6885/BASIC Master Jr
1982 - Thomson TO7, TO7/70
1982 - Jupiter ACE
1982 - Sinclair ZX Spectrum
1982 - Coleco Vision
1982 - Arcade Laserdisc
1982 - HP-16C
1982 - HP-15C
1983 - HP-41CX
1983 - IBM PC XT, online version
1983 - Casio PV-1000
1983 - Casio PV-2000
1983 - Toshiba PASOPIA 7
1983 - Chaos 2 Computer
1983 - Sharp MZ-2200
1983 - Sharp MZ-5500
1983 - Panasonic/National JR-800
1983 - NEC PC-2001
1983 - NEC PC-8201/8201a
1983 - NEC PC-100
1983 - Vtech Laser 100/110
1983 - Coleco Adam, CoolCV
1983 - SEGA SG-1000/SC-3000
1983 - Sony SMC-777
1983 - NES
1983 - Hino Electronics CEFUCOM-21
1983 - Phillips Videopac+ G7400
1983 - MSX, MSX2, MSX2+, TurboR, online msx
1983 - Electronika BK-0010, alt
1983 - ДВК/DVK / ДВК-2/DVK-2
1983 - Apple Lisa
1983 - Canon X-07
1983 - HT-1080Z/VideoGenie/System-80
1983 - Spectravideo SV-318/328, online version, zesarux, svi-3x8 emulator
1983 - TRS-80 Model 100, 102, 200
1983 - VCS-80
1983 - Vtech Laser 200/210, vz emulators, vz200-emulator
1983 - HomeLab Model III/IV
1983 - Sanyo PHC-25
1983 - Timex TS 2068
1983 - Микро-80/Micro-80
1983 - Olivetti M24
1983 - Casio FP-1100
1983 - Epson QX-10/QC-10
1983 - Panasonic JR-200, older emulator
1983 - Matra Alice 32
1983 - Mattel Aquarius
1983 - Bandai RX-78
1983 - Fujitsu FM-16 Beta
1983 - Mitsubishi Multi-8
1983 - Tandy MC-10, Virtual MC-10, dcalice
1983 - Acorn Electron, ElectrEm, ElkJs
1983 - Compaq Portable
1983 - Sega System 1
1984 - COMIX-35, open source clone of COMX-35
1984 - Amstrad CPC, CPCwiki page
1984 - SF-7000
1984 - Fujitsu FM-77/FM-77L4/FM-77AV/FM-77AV40/FM-77AV40EX
1984 - IBM PC/JX
1984 - Toshiba HX-20 + FDD
1984 - Thomson MO5, MO5E, MO5N, MO5NR
1984 - Philips / Radiola / Schneider VG5000µ
1984 - Sharp MZ-1500
1984 - Sharp MZ-6500/6550
1984 - Robotron KC85, online virtualkc, KC85 Emu, JKCEMU, kcemu
1984? - HC900
1984 - Hübler / Evert-MC
1984 - Amstrad CPC 464, 664, 6128, online version
1984 - Microkey Primo
1984 - Oric Atmos
1984 - IBM PCjr, online emulator
1984 - IBM AT
1984 - Apple Macintosh
1984 - VAXstation I / MicroVAX I
1984 - VAX 8600/8650
1984 - Nintendo Family BASIC
1984 - Pioneer PX-7
1984 - Irem M62, M63, M72, M90, M92 and M107
1984 - Exelvision EXL100
1984 - Compaq Portable Plus
1984 - Ravensburger Selbstbaucomputer/2650 Minimal Computer
1984 - RCA Microdisk Development System MS2000
1984 - Commodore 16/116/Plus 4, other emulators
1984 - Sinclair QL, zesarux
1984 - Tandy 1000/1000HX/1000SL/2
1984 - Compaq Deskpro/Deskpro 386
1984 - Epson PX-8 Geneva
1984 - LC-80
1984 - AT&T 3B2
1984 - AT&T 6300
1984 - Zenith Z-150
1984 - Amateurcomputer AC1 Berlin
1984 - Super Cassette Vision
1984 - Poly880
1984? - Агат-7/Agat-7
1984 - Galaksija
1984? - Commodore PC-30 III
1985 - Pecom 32 and 64
1985 - Atari ST
1985 - Специалист/Specialist
1985 - Robotron PC 1715
1985 - Epson PX-4/HC-40/HX-40
1985 - Fujitsu FM-16 Pi
1985 - Enterprise, ep32emu, online version
1985 - SMS/SEGA Master System
1985 - Pravetz 8D
1985 - VTech Laser 310, vz emulators
1985 - VTech Laser 350/500/700, laser500emu
1985 - NCR PC4/i
1985 - NEC PC-6601/6601SR
1985 - NEC PC-98XA/XL/RL/DO/LT/HA
1985 - Z1013
1985 - Zemmix Series
1985 - LLC1
1985 - LLC2
1985 - Sharp MZ-800, MZ-800 emulator
1985 - Sharp MZ-2500
1985 - Tesla PMD-85
1985 - Thomson TO9
1985 - Commodore 128
1985 - Commodore Amiga
1985 - Amstrad PCW, CP/M Box
1985 - Intel 80386/Intel 386
1985 - VTech Type-right machine
1985 - Ириша/Irisha
1985 - BCS3
1985 - Sega System 16 and similar
1985 - VAXstation II / VAXstation II/GPX / MicroVAX II
1986 - VAX 8200/8250
1986 - Amstrad PC1512
1986 - Amstrad PC1640
1986 - IBM XT Model 286
1986 - Toshiba J-3100GT/SL / T3100
1986 - Toshiba T3100e
1986 - C-80
1986 - Panasonic FS-A1
1986 - Nintendo Famicom Disk System
1986 - Atari 7800
1986 - Oric Telestrat
1986 - Львов ПК-01/PC-01 "Lviv"
1986 - Радио-86РК/Radio-86RK
1986 - Compaq Portable II
1986 - Exelvision Exeltel, Exeltel VS, Exeltel VX, Amper, Comtel
1986 - Videoton-TV Computer
1986 - Океан-240/Ocean-240
1986 - Thomson MO6/Olivetti Prodest PC 128
1986 - Thomson TO8/TO8D
1986 - Thomson TO9+
1986 - Apple IIGS
1986 - Psion Organizer II, online Jape emu
1987 - rtVAX 1000/Industrial VAX 620
1987 - [VAXstation 2000 / MicroVAX 2000}(https://github.com/simh/simh)
1987 - MicroVAX 3100 M10 / M10e / M20 / M20E
1987 - Robotron KC 87/Z9001/KC85/1, tiny8bit online version
1987 - Kramer MC
1987 - Thomson TO16
1987 - Toshiba T1000/T1200
1987 - VTech Laser Turbo XT
1987 - Микроша/Mikrosha
1987 - Партнёр/Partner
1987 - ПК 8000 Сура/Веста/Хобби / PK8000 Sura/Vesta/Hobby
1987 - IBM PS/2 Model 30-286 / 50 / 55SX / 70(type 3 and 4) / 80
1987 - Cambridge Z88, OZvm
1987 - Fujitsu FMR-30/50/60
1987 - Acorn Archimedes, ArcEm
1987 - Sega X-Board
1987 - Корвет/Corvette
1987 - Вектор-06ц/Vector-06c / Вектор Старт-1200/Vector Start-1200 / Криста-2/Christa-2
1987 - Sharp MZ-2800
1987? - Taito Y
1987 - Sharp X68000
1987 - Action Max
1987 - PC Engine/ Turbografx-16
1987 - Atari XEGS
1988 - Atari PC3
1988 - Fujitsu FMR-70/80
1988 - Zenith Data SuperSport
1988 - Capcom Play System 1, WinKawaks
1988 - Апогей/Apogee
1988 - Juku
1988 - Hübler graphic MC
1988 - Schneider Euro PC
1988 - Amstrad PC2086
1988 - Amstrad Sinclair PC200/PC20
1988 - Amstrad PPC512/640
1988 - Dell System 200
1988 - Sega Y-Board
1988 - Эрик/Eric
1988 - Микролаб КР580ИК80/Mikrolab KR580IK80
1988? - Toaplan 1
1988? - Taito F2
1988 - Epson PC AX/AX2e/AX3
1988 - SEGA Genesis/Mega Drive, online emulator, Genesis Plus GX Wide
1989 - MicroVAX 3900
1989 - BIC A5105
1989 - Байт/Byte
1989 - МС 2721
1989 - ПК 8002 Эльф / PK 8002 Elf
1989 - Поиск-1/Poisk-1
1989 - Юниор ФВ-6506/Junior FV-6506
1989 - ЮТ-88/UT-88
1989? - АРМ-ШК Башкирия, Башкирия-2М/ ARM-ShK Bashkiria, Bashkiria-2M
1989 - Game Boy
1989 - Atari Lynx
1989 - FM Towns/FM Towns Marty
1989 - Pentagon/Пентагон
1989 - KC Compact, tiny8bit online version
1989 - ЛИК/LIK
1989 - NMK16
1989 - SLC1
1989 - A5105 (BIC, ALBA-PC 1505)
1989 - Intel 80486/Intel 486
1989 - Sega System 18
1989 - VAXstation 3100 M30 / M38 / M76
1990s
1990 - IBM System/390
1990 - Эльф/Elf Console
1990? - Фотон (игровой автомат)/Photon (slot machine)
1990 - Commodore 64 Games System
1990? - Amstrad PC3086/PC5086
1990s? - Infoserver 100 / 150 VXT / 1000
1990 - SNES/Super Famicom
1990 - IBM PS/1, model 2011, 2121 emulator
1990 - Орион-128/Orion-128 / Орион-Про/Orion-Pro
1990 - Neo Geo and its variants, online emulator
1991 - VAXstation 4000 VLC / M60
1991 - Phillips CD-i
1991 - Kaneko 16
1991 - ПК-6128ц/PK-6128ts
1991 - Специалист-МХ/Specialist-MX
1991? - Toaplan 2
1991 - Babbage's 2nd Difference Engine
1991 - SEGA Game Gear
1992 - SEGA Model 1
1992 - Atari Falcon, ARAnyM
1992 - Watara Supervision, potator
1992 - Tandy Video Information System/Memorex VIS -- Uses an altered version of Windows 3.1, software may be able to run on there
1992 - Dendy
1992 - TV Boy
1992? - Acermate 386SX/25N
1993 - MicroVAX 3100 M80
1993 - Psikyo 68EC020 and SH-2 based hardware
1993 - Capcom Play System 2, WinKawaks
1993 - SEGA Model 2
1993 - SEGA Pico/Advanced Pico Beena
1993 - Intel Pentium
1993 - 3DO Interactive Multiplayer/Panasonic 3D0
1993 - Amstrad MegaPC
1993 - Elonex PC-425X
1993 - Алеста 520ЕХ/ Alesta 520EX
1993 - Psion Series 3
1993 - Atari Jaguar
1994 - Playstation 1
1994 - SEGA Saturn/SEGA Titan Video
1995 - Cave Arcade
1995 - Sony ZiNc/ZN-1/ZN-2/Namco System 11, other emulators
1995 - Nintendo Virtual Boy
1996 - Nintendo 64
1996 - SEGA Model 3
1996 - Kaneko Super Nova System
1996 - Capcom Play System 3
1997 - Intel Pentium II
1997 - PolyGame Master
1997 - Tiger Electronics Game.com
1998 - Intel Celeron
1998 - Seiko Ruputer/Matsucom OnHand PC
1998 - Game Boy Color
1998 - Neo Geo Pocket / Neo Geo Pocket Color
1998 - SEGA Dreamcast
1998 - SEGA VMU
1998 - SEGA NAOMI
1999 - SEGA NAOMI Multiboard
1999 - SEGA Hikaru
1999 - Gaelco PowerVR Based
1999 - Psion Series 5mx
1999 - Sony PocketStation
1999/2000 - WonderSwan/WonderSwan Color
2000s
2000 - IBM z/Architecture
2000 - Cybiko
2000 - NUON - Enhanced DVD player
2000 - Playstation 2
2001 - GP32
2001 - Xbox
2001 - SEGA NAOMI 2
2001 - Pokemon Mini
2001 - Game Boy Advance
2001 - GBA e=Reader
2001 - Nintendo Gamecube
2003 - Atomiswave/System X
2004 - Nintendo DS
2004 - Sony PSP
2004 - SEGA System SP
2004 - Taito TypeX and its variants
2004/2008 - Cave CV1000B/CV1000D
2005 - Xbox 360
2006 - Mattel Hyperscan
2006 - V.Smile
2006 - Nintendo Wii
2006 - Playstation 3
2008 - Android
2009 - Nintendo DSi
2010s
2011 - Nintendo 3DS
2011 - Sony Playstation Vita
2012 - Nintendo Wii U
2015 - GPD XD/XD+
2017 - Nintendo Switch
???? - Membership Card/VIP2K Membership Card
19xx - Cellphones before Android
19xx - General Arcade
19xx - Seiko MAP-1010
19xx - Yuasa Kyouiku System YALKY
19xx - Shinko Sangyo YS-6464a
19xx - NANOS
19xx - MITEC MP-85
19xx - PC/M / Mugler/Mathes PC / Mugler-PC
19xx - Data East DEC-0, DEC-8 and DECO IC16 based games
19xx - Packard Bell Legend SX300
19xx - Bull Micral 45
19xx - Intel Systems 8010 and 8020
19xx - RCA Microboard System