The bintrans Dynamic Binary Translator is a dynamic binary translator which runs programs on architectures they were not compiled for. It does this by dynamically translating the machine code of the programs to be run to machine code for the native architecture. It currently translates from i386 to PowerPC and from PowerPC to Alpha.
Dapple ][ is an emulator for the Apple ][, ][+, and //e computers (and to some extent the //c) supporting from 48-3136 K RAM, parallel ports, 2 Disk ][ drives, and a real 1.40 MB floppy drive. It is written in gcc and nasm (the nasm component is not currently source-available). It supersedes Dapple, which has many of the same features.
asq is a simple frontend for MAME/emulator cabinets. It runs in a terminal window using curses, and pops up an optional screenshot window. It uses MAME/emulator keybindings so you can control your MAME cabinet using just your MAME controls. (In fact, this is where the name comes from--player 2 buttons 1, 2, and 3 are "asq".) It can also remap your games to use MAME keys. asq is meant for people who don't want to use a keyboard and have lots of games to manage.