Altirra
Altirra is a full cycle-exact emulation of all documented hardware features for the Atari 400/800, 1200XL, 600/800XL, 130XE, XEGS, and 5200 systems and is particularly notable for having a very well equipped debugger tool.
Last Stable Release:
4.4
Dated:
02-01-2026
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Windows: XP SP3+ for x86/x64
Qualcomm Snapdragon 835+ for ARM64
MAME
Multiple Arcade Machine Emulator is a free and open source emulator designed to recreate the hardware of a wide variety of (mostly vintage) computers, video game consoles and calculators.
The aim of MAME is to be a reference to the inner workings of the emulated machines; the ability to actually play the games is considered "a nice side effect". The source code to MAME serves as this documentation. The emulator now supports over seven thousand unique games and ten thousand actual ROM image sets, though not all of the supported games are playable. It worth mentioning that the sister-project MESS was integrated into MAME.
Unofficial recent MAME 32-bit versions are available here..
Last Stable Release:
0.284
Dated:
02-01-2026
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Windows: Vista SP1+
Linux: Nothing reported
MacOS: 10.9+