Instead of Atari800
Atari800 alternatives
Atari800 focuses on Atari 8-bit computers and the Atari 5200, with cycle-exact emulation for key hardware and support for several disk-image formats and up to eight disk drives. It also loads Atari executable files and BASIC programs, emulates cassette tapes, and can save files to the host computer. Its controller support ranges from real joysticks to emulated paddles, light guns, mice and trackballs. The free emulator runs on Android, Linux, macOS and Windows, and can save screenshots and sound output.
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Foxol
Free plan AndroidiPhoneLinux+3Cross-device classic gaming with multiplayer and customization — Foxol covers systems from Game Boy to PlayStation and adds cloud saves, multiplayer, cheats and customization.
Free plan Visit site - 2
RetroArch
Free plan AndroidiPhoneLinux+3A unified frontend for many emulation cores — RetroArch is a frontend with over 200 cores, a unified settings system, shaders and built-in netplay rather than an Atari-focused emulator.
Free plan Visit site - 3
Virtual Jaguar
Free plan Open source AndroidAPIiPhone+5Atari Jaguar and Jaguar CD emulation — Virtual Jaguar emulates Atari Jaguar cartridges and Jaguar CD, while Atari800 targets Atari 8-bit computers and the 5200.
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MAME
Free plan AndroidLinuxMac+1Preserving and examining varied vintage systems — MAME documents arcade games and many vintage computers and consoles, and adds a debugger and Lua interface beyond Atari800's Atari focus.
Free plan Visit site - 5
SkyEmu
Free plan Open source AndroidiPhoneLinux+3Game Boy and Nintendo DS emulation — SkyEmu targets Game Boy, Game Boy Color, Game Boy Advance and Nintendo DS, with shaders and persistent save-state slots.
Free plan Visit site - 6
VICE
Free plan AndroidLinuxMac+1Commodore 8-bit computer emulation — VICE emulates Commodore computers and provides cycle-accurate 6502/6510 timing, VIC-II video and SID sound for C64 emulators.
Free plan Visit site - 7
XRoar
Free plan AndroidLinuxMac+2Dragon and Tandy 8-bit computer emulation — XRoar emulates Dragon, Tandy CoCo, MC-10 and related computers, with cassette, floppy and block-device images.
Free plan Visit site - 8
Avidemux
Free plan Open source LinuxMacWeb+1 - 9
BigPEmu
Free plan iPhoneLinuxMac+1 - 10
A7800
Free plan AndroidLinuxMac+1 - 11
EMU7800
Free plan LinuxMacWindows - 12
Altirra
Free plan Windows - 13
Javatari
Free plan AndroidAPIiPhone+2 - 14
kat5200
Free plan AndroidLinuxMac+1 - 15
Atari800MacX
Free plan Mac - 16
Atari 5200DS
Free plan - 17
Gearlynx
Free plan AndroidAPIExtension+6 - 18
Stella
Free plan LinuxMacWindows - 19
Teller
Free plan LinuxMacWindows - 20
z26
Free plan LinuxMacWindows - 21
Test7800
Free plan LinuxMacWeb+1 - 22
Felix
Free plan Windows - 23
JS7800
Free plan Web - 24
ProSystem Emulator
Free plan Windows - 25
Íris Emulator
Free plan Windows - 26
Gopher2600
Free plan Mac - 27
Lynx.emu
Paid AndroidiPhoneLinux - 28
2600.emu
Paid AndroidLinux5.1 Visit site - 29
Holani
Paid LinuxWindows - 30
a5200
Paid iPhoneLinuxMac+2
That Atari focus may be limiting if you want to play games from other systems or use a broader emulation toolkit. The alternatives here range from multi-system platforms and frontends to emulators for specific consoles and computers. Compare which systems matter to you, whether you want features such as multiplayer or debugging, and how each option handles saves, controllers and media. Atari800 remains a direct fit when Atari systems are the priority; another choice may suit you better when its system coverage or additional tools align with what you want to do.