AmigaOS Emulation Under Linux
"There are two major players in the Amiga emulation arena, UAE and E-UAE and two major players in the pre-configured Workbench arena, AIAB and AmiSYS. If I was to give a preference as to which two of those four one should use I would need to be honest and say E-UAE and AmiSYS make for a better Amiga/Workbench experience. That said, all four could very easily be interchanged." More here.