Basilisk II - Basilisk II is an Open Source 68k Macintosh emulator.
Sheepshaver - Home page of the SheepShaver Macintosh emulator
Steem Engine - Steem is an open source Atari STE emulator for Windows and Linux.
QEMU - QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that...
Hataroid - Atari ST emulator for Android based on Hatari.
MESS - Emulates most gaming systems that exist, emphasizing accuracy over speed.